Echo bike to run conversion

Mountain bike tire pressure is the most complex because of the number of variables, including tire widths (2.1″ - 2.8″), disciplines (XC, Trail, Enduro, DH), terrains, and MTB wheel sizes.In addition, individual preferences contribute heavily to mountain bike tire psi. The gravity disciplines require higher PSI to maintain rolling speed and avoid flats when taking big hits.

Echo bike to run conversion. assault bike | watts & rpms rpms watts 29 47 30 50 31 54 32 58 33 63 34 67 35 71 36 77 37 82 38 88 39 93 40 99 41 106 42 113 rpms watts 43 120 44 127 ...

The cost to convert a bike to electric can cost as much as an entry-level eBike (or more). A DIY electric bike kit with a battery starts at around $550, with prices for some electric bike kits approaching $1,000. If you see a kit for less, check to see if it comes with a battery. The battery pack is often one of the most expensive electric bike ...

Budget Single Speed Conversion. A basic single speed conversion needs the following: Removal of your smallest front chainrings so only one remains. Ideally this is a non-ramped chainring. A single cog on the rear. If you are on a budget, something cheap like a Shimano DX/BMX style cog will work fine.Oct 20, 2023 · As a rule of thumb, here’s a rough estimate of the bike-to-run equivalent distances based on effort level: Easy ride: 1 mile of biking = 1.5 miles of running. Moderate ride: 1 mile of biking = 1.25 miles of running. Hard ride: 1 mile of biking = 1 mile of running. One of the best cross-country mountain bike races Oregon has to offer. Featuring a unique course and start/finish in historic Echo Oregon. Start Times: Elite, Cat-1, Singlespeed 11:00am. E-MTB 11:15am, Cat-2 and Cyldesdale 11:30, Cat-3 11:45am. The Sno Road Winery mountain bike trail system in Echo began in 2002, and has been developed and ... Hi! i’ve seen in some places for example crossfit mayhem programming that there’s a conversion for cals in the assault to the echo bike e.g.: 15 cal assault bike=12 cal echo. does anybody know what the extact ratio is? Mayhem says 14 on assault = 12 on echo or 200 on assault = 160 on assault. So about 1.2-1.25 on assault =1 on echo. This USB power cable is available in either black or white color. The USB plug that you use for this power cable must output at least 2 amps in order for it to be able to convert the 5-volt USB output to the 12-volts that the Echo Dot needs. USB 5-Volt to 12-Volt Power Cable. Black Cable. Buy on Amazon.Xebex Air Bike. Xebec is a well respected brand with a few air bike offerings. They offer a few genuine alternatives to the common Rogue Echo or Assault Bike offerings with their Xebec MG3 Magnetic Air Bike, standard Air Bike and crazy VR1. The magnetic offering is not one I would consider as the magnetic functionality to vary resistance goes ...

BLUF set wheel diameter to 1410 mm. I recently bought a Rogue Echo Bike, and wanted to sync my distance with my Garmin watch. After lots of searching, I couldn't find good calibration settings. So I experimented, and I'm posting my results so the next person who searches can find an answer. It was easy to attach the speed sensor to the wheel ...Start your fitness journey today and get healthy. Find a gym near you.Let's compare two of the front runners of the pack - this is Rogue Echo Bike versus Schwinn Airdyne Pro (also sold as the AD7). The Schwinn Airdyne Pro is also sold as the AD7 model. Either way, it is Schwinn's top of the line air bike model. The Rogue Echo Bike was intended to be the best air bike - period.Sep 17, 2023 · The Ski-Erg Calorie Conversion Chart. To make things easier, we’ve created a Ski-Erg Calorie Conversion Chart that you can use to quickly determine how many calories you’ve burned during your workout. Speed (m/s) Power Output (Watts) Estimated Calories Burned per Minute. 1.5. Conclusion. So there we have it - the Rogue Echo bike DOES fit short people…. As long as you're over 5' it is LIKELY you will be able to use the Echo, and some folks shorter than this will still manage to make it work. Just be careful with your measurements! The main area for 'criticism' on the Rogue Echo bike for us shorter people ...Take all the above into account and we can build a very simple equation for calculating calories burned while cycling from average wattage: energy (kcal) = avg power (Watts) X duration (hours) X 3.6. You might be wondering where that 3.6 came from. It’s simply an adjust for time and the factor of 1000 reduction to get from cal to kcal (60 ...They're fine for fitness, so those cardiovascular adaptations will translate to cycling or running. I'd still say that doing a structured session on your actual bike on a trainer would give you more benefit, you'd get the fitness adaptations but you'd also get the benefit of training your body in your riding position.

It frees up both hands in the shop. The battery of the Swytch Bike e-bike conversion kit in the side pocket of Camelbak MULE 22L pack. (Image credit: Paul Grele) The optional thumb throttle was ...Rogue Echo Bike - 50 Cal Challenge. 24 seconds 🤡. I wish there was a challenge from the Endurance end of the spectrum too 😅. I feel like this should have height or weight class divisions too to see the trends across categories. Fuck a bunch of that. There is almost nothing I'd rather do less.It's also really smooth and way more quiet than the traditional airdyne or assault bike. The bike erg is more sport-specific but definitely has a great feel to it. If you could only choose one I would definitely go with the echo bike. It's cheaper and more versatile. 6.The cost to convert a bike to electric can cost as much as an entry-level eBike (or more). A DIY electric bike kit with a battery starts at around $550, with prices for some electric bike kits approaching $1,000. If you see a kit for less, check to see if it comes with a battery. The battery pack is often one of the most expensive electric bike ...Start at 100w and increase your power output by 25 watts every 150 seconds (2 and a half minutes). Record the last completed interval (x), and how far into the uncompleted interval you managed (y). Peak Power Output (PPO) = x + 25 * y/150. Your VO2 max can then be estimated from this peak power and your body weight using the formula: VO2 max ...

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Overbuilt for a smoother ride, the Rogue Echo Bike combines heavy-duty steel, precision engineering, and convenient customization to forge a stronger, sturdier fan bike. This overbuilt 145 LB unit provides a rock solid foundation for max output bursts, while still offering easy portability around the gym via a set of 1” polyurethane front wheels. A […]I fought the echo bike, and the echo bike won : kelakeEcho calorie conversion rpm calories assault crossfit heatonminded revolutions Before and after echo 20”Concept 2 rower to assault echo bike meters and calories conversion. My echo mod. - Bike Pictures - Trials-forum. Check Details. My echo. Echo calories meters assault rowing rower ...The Rogue Echo Bike is one of the best air bikes on the market. It’s rugged, overbuilt, and a true workhorse for conditioning workouts. The belt drive is quieter and easier to maintain than chain drives, and it has an easy-to-use, readable LCD monitor. Overall Rating: 9.2/10. ★ ★ ★ ★ ★ ★ ★ ★ ★ ★. Build Quality: 9.5/10.Convert your run to a C2 Row, Bike or Ski Erg; Assault Bike; Echo Bike; skipping; or even burpees! More members than machines? No-one should miss out on the class due to a lack of rowers or bikes. ...By: Richard Peace. E-bike conversion kits are a solution that allow you to add a motor, battery and electric controls to a non-electric bike to make it into an e-bike. Chosen with care and installed correctly, the resulting e-bike lets you ride with electric assist just like a 'regular' e-bike. With the range of readymade e-bike designs ...

Echo wellfit – cycling metrics by echowell electronic co., ltdWod: sun 03.03.2024 "feels like forever" Pin on bikes25+ bike run conversion. Echo WellFit – Cycling Metrics by ECHOWELL ELECTRONIC CO., LTDMountain bike or BMX: 502: 598: 695: 791: Running: 5 mph (8 km/h) 472: 563: 654: 745: 5.2 mph (8.4 km/h) ... some people may be able to cycle for longer than they can run, which will also affect ...Components Needed. Steps for Converting a Bike to Electric. Step 1: Choose the Right Conversion Kit and Battery. Step 2: Remove the Existing Wheel. Step 3: Install the Motor. Step 4: Mount the Controller. Step 5: Install the Throttle and Brakes. Step 6: Connect the Battery. Step 7: Test Your Bike.The Echo Bike is more responsive and takes less time to wind down after use, whereas the Assault Bike takes longer to wind up and wind down. The Assault Bike has low, narrow handles, whereas the Rogue Echo has high, wide handles. The Rogue Echo boasts a weight capacity of 350 lbs, whereas the Assault Bike only has a capacity …A couple people have already said this but the bike erg is great for longer workouts to work on pacing where as the Echo bike is perfect for short to mid range work outs where you want to challenge your cardio (+mental toughness). Also, using the Echo bike has made hopping on an assault bike way easier as well. 1.VO2 Max Calculator: 1.5 Mile Run / Walk Test. This calculator uses the Cooper 1.5 mile run/walk test to estimate VO2 max. According to a study by the American College of Sports Medicine, the 1.5 run test is a valid method for assessing cardiovascular fitness . How to perform the testA place for people to discuss Apple Watch fitness. Tips for completing goals, reviewing and discussing apps, and sharing victories/struggles.Mountain bike or BMX: 502: 598: 695: 791: Running: 5 mph (8 km/h) 472: 563: 654: 745: 5.2 mph (8.4 km/h) ... some people may be able to cycle for longer than they can run, which will also affect ...

Overall, the kit with wheel should run around $250-300 from China, if you can wait a couple of months, or another hundred from the U.S. (depending on the OP's location). A battery would about double that, depending on desired range. So maybe $600-$700 cost plus a few hours of easy work.

Hinshaw and Froning created the Mayhem Aerobic Capacity (“MAC”) track for the recreational to competitive athlete looking to complement their existing training while creating a more well-rounded level of fitness. The success of this track is centered on a proven workout balance between volume, intensity, and recovery.This means that a 3:45 running mile equivalent on the erg at ergometer world record pace would be about 1339 meters in that time (a 1:24 pace for 3:45), whereas a 7:30 running mile would equate to 1815 meters in 7:30 (a 2:04 erg pace), and 9:30 running mile would equate to 2176 meters in 9:30 at a 2:11 pace. Here's the chart.200 400 800 1600 5,000 10,000 Run Row/Ski Assault Bike Echo Bike 200 400 800 1,600 4,000 8,000 250 500 1,000 2,000 5,000 10,000 450 875 1,750 3,150 8,750 17,500 625 1,250Two useful shell options that can be added to the bash command line or via the set command in a script or interactive session:-v Print shell input lines as they are read.-x After expanding each simple command, for command, case command, select command, or arithmetic for command, display the expanded value of PS4, followed by the command and its expanded arguments or associated word list.For the Echo Bike, the inputs required include power supply, pedals, handlebars, and a frame. For the Assault Bike, the output requirements include a motor, speed control system, brakes, and a frame. Additionally, any parts that are not compatible between these two bikes will need to be replaced in order for the conversion to be successful.Hyuhome Electric Bikes for Adult, Magnesium Alloy Ebikes Bicycles All Terrain,26" 36V 13Ah Removable Lithium-Ion Battery Mountain Ebike for Mens. Ergonomic Design: Ergonomic handbar, adjustable seat and rst, Anti-slip and wear resistant tire. The bright LED adaptive headlights is equipped for night riding.Best Electric Bike Conversion Kits for 2024: 1. Bafang 8FUN - Best E-bike kit for 2024. The Bafang 8FUN is our top pic for the best electric bike conversion kit. Although this is a quite expensive choice it is by far on of the best Mid-drive conversion kits. A mid-drive system gives you two working modes; you can either switch between the pedal ...This means that a 3:45 running mile equivalent on the erg at ergometer world record pace would be about 1339 meters in that time (a 1:24 pace for 3:45), whereas a 7:30 running mile would equate to 1815 meters in 7:30 (a 2:04 erg pace), and 9:30 running mile would equate to 2176 meters in 9:30 at a 2:11 pace. Here's the chart.Two useful shell options that can be added to the bash command line or via the set command in a script or interactive session:-v Print shell input lines as they are read.-x After expanding each simple command, for command, case command, select command, or arithmetic for command, display the expanded value of PS4, followed by the command and its expanded arguments or associated word list.

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Been here much more than a while. Location. Maine Island. He wanted to put a more aggressive chain on instead of the 355 stock. Have had zero issues with my 355 bar or chain, but putting a better quality one on a larger echo or husky powerhead makes tons of sense. Stock Stihl bars seem better.The Rogue Echo Bike has quite a few things going for it that make it an excellent choice for people who are serious about getting, or staying, fit: Strong steel frame. The dimensions are 52.75" H x 58.875" L x 29.875 W. The footprint is 44.5" x 23.75". LCD console that tracks intervals, heart rate, distance, calories burned, and more.Incline / Decline. If a bike has built-in incline and decline, the angle of the bike will affect how each resistance level feels. For example, level 14 on a flat grade will be much easier than level 14 on a 10% grade — even though resistance is the same. Currently, only the NordicTrack bikes feature incline and decline.The general rule of thumb is that one mile of cycling is equal to roughly 0.3 miles of running. This means that to figure out your running equivalent, you need to take the total number of miles you cycled and multiply it by 0.3. For example, if you cycled 15 miles, the running equivalent would be 4.5 miles.Nothing special on my part. I'm a pretty big dude (6'1", 400lbs) I've been going to CF consistently (5/6 days/week) for a year now. I normally will use the echo bike for all cardio portions of the workout. Long or short. It's harder for me to breath rowing. Running is getting easier, but I'll avoid anything above 250m and use the bike.Conversion tables for common bicycle tire sizes: Nowadays, bike tires are typically marked according to ISO standard (), a system originally developed by ETRTO (European Tire and Rim Technical Organization), but older English and French tire size dimensions are still used as well.Use the data from the following tables to determine interchangeability and convert between ISO / ETRTO, English ...The resulting power function (Power=0.0039*Cadence^2.704) closely approximates the Rogue Echo bike output (+/- 3% error) for all but very low (<30 rpm) or very high (>90 rpm) cadence values. Using AppBuilder 5, the power function was used as an equation to convert cadence to power, which can then be displayed as a data field on my Edge 830.Overbuilt for a smoother ride, the Rogue Echo Bike combines heavy-duty steel, precision engineering, and convenient customization to forge a stronger, sturdier fan bike. This overbuilt 145 LB unit provides a rock solid foundation for max output bursts, while still offering easy portability around the gym via a set of 1” polyurethane front wheels. A [&hellip;]Conventional trikes can be converted with a mid drive conversion kit with minor modifications. The Tongsheng TSDZ2 is popular for this (one of the few mid drive conversions that is torque sensing). Eco Cycles sells a trike conversion kit. Note that trikes come in two configurations.These are for the assault bike, but they work fine on the Echo as well. 5:30 is a pretty decent 100 on the Echo Bike. I've had the Rogue Echo bike for almost a year now. For reference, I'm 50, 5'10" and 170 lbs. Here are some personal benchmarks: 50 cals: 2:43. 100 cals: 6:46. 150 cals: 10:38. 300 cals: 26:22. ….

HR + time on bike = HR + time running. it's just harder to get the HR really high on biking if you haven't been doing much biking. MPH isn't a great way to measure anything on the bike due to bike ...If you are only asking to convert 1x1000m on the assault bike to running, I would first have you pick a targeted intensity for the assault bike and estimate the total time to complete the 1000m. ... I’d probably sub around a 400 meter run for a 1k on the bike personally. General rule of thumb I use is a 1:3 ratio when comparing effort, so ...By Olivier Poirier-Leroy, NASM-CPT. The Rogue Echo is one of the most popular—if not the most popular—air bikes on the planet. And with good reason. In this review of the Rogue …Also as mentioned in the airbike section, the rowing machine has a memory function that allows you to analyze the consistency of a piece of work after-the-fact, and an easy-to-use monitor to help set up various types of interval-style workouts. Low Impact. Not unlike the air bike, the rowing machine is also low impact, providing less pressure ... This usually puts me off the bike around the same time as the rowers. I prefer going for distance more than for time because I will put more effort in to get it over with faster. Every 100 meters is 30 seconds and every 50 meters is 15 seconds, and that’s on the slower rowing side. 100m - 30 sec 150m - 45 sec 200m - 60 sec 250m - 75 sec. Where to buy. Easily convert your handheld blower into a powerful mist blower. Adding a unique feature for your blower to be used for pest control, fungicide, mosquito control and vegetation. With decontamination at the forefront of the battle against Covid-19 this conversion kit offers a convenient solution to quick and effective cleaning.The Rogue Echo Air Bike is priced right around $895, which is about average compared to similar air bikes on the market — but the heavy-duty steel used to forge this product makes it sturdier ... Echo bike to run conversion, Below is a chart breaking down the Crossfit Run Row Bike Conversion. Allowing athletes to substitute rowing for running in almost any Crossfit workout. Along …, Echo, which uses Amazon Alexa, can't answer as many questions as Google Assistant, but remains far more popular. Three years and change since Amazon first launched Alexa, the digit..., If you’re running measurements for a renovation or helping a middle schooler with their math homework, it’s helpful to know how to convert feet to meters. Read on to learn more abo..., The longevity and sturdiness of the bike is a crucial factor to consider when assessing its overall value. A bike that is built to last and can withstand wear and tear will require less maintenance and repairs in the long run. Look for a 3 wheel electric bike that is made with high-quality materials and has a solid construction., Best value. AW Electric Bike Conversion Kit. SEE IT. A rear-hub motor allows this kit to feel more natural and stand out from our other recommendations. Best budget. Pexmor Electric Bike ..., Ya I don't think this is 100% correct but I think its close. Like a 90% solution. Air Assault bikes differ so much not only between brand but even inside the same brand between the same bikes. We all know we have that one bike in the gym that counts cals faster haha. So I don't think any conversion will ever be 100% correct. Ya I'm loving reddit!, Bikes with easily accessible controls and cables are much easier to convert than complicated ones. A bike with front disc brakes will be more suitable for stopping an electric bike on a steep hill. Step 2: Decide on an Electric Bike Conversion Kit. One of the easiest ways to make your bike go electric is by using an electric bicycle conversion kit., The Echo Bike is built with a range of durable steel tubing (2" x 3", 1.25" x 3", and 1.625" x 3.125") finished in a texture black powdercoat. The adjustable padded seat locks into 8 different height settings and 5 front-to-back settings, and the 1.5” diameter rubber-grip handles are welded directly to the bike’s arms for added rigidity. , Stuck on which holiday gifts to buy? These items, like the Amazon Echo and Google Chromecast Audio, make for great tech gifts under $50. By clicking "TRY IT", I agree to receive ne..., According to our research we found that it takes about 1200 watts to generate 1 calorie on the Echo Bike. 50 rpm = 149 watts x 8seconds = 1192 = 1 calorie. This …, Double-check the alignment of the bracket to ensure it is parallel to the frame. With the motor securely attached, you are one step closer to converting your Trek Verve 3 into an electric bike. The motor is the heart of the conversion, providing the power needed to propel your bike forward., Xebex and Assault = no noticeable difference Echo = ~30% less power recorded (Watts) On Assault/Xebex he holds 1200 watts, on Echo he can only hold 850 watts. Echo is WAY heavier and therefore solid when sprinting. Moves much less. Slows down faster than the Assault when you stop peddling., Owning a concept 2 rower and hammering away on that consistently rather than putting pounding on my feet certainly helped me from a cardio standpoint and my legs felt much fresher than they had in the past during long distance runs or on race day. I would imagine the echo bike will provide a similar feeling. Nice pickup!, When it comes to running a bicycle business, finding reliable wholesale suppliers is crucial. Whether you’re starting a new store or looking to expand your inventory, selecting the..., The Echo Bike is built with a range of durable steel tubing (2" x 3", 1.25" x 3", and 1.625" x 3.125") finished in a texture black powdercoat. ... Whether you train out of a garage gym or run your own large-scale facility, the Echo Bike makes a logical companion piece to some of the other top endurance machines in the industry, ..., Sep 24, 2015 · In terms of distance covered in a certain amount of time for the same power input, you get: D-row/D-bike = 0.44 (touring bike) or 0.41 (racing bike). For a more accurate comparison, one should add the rolling resistance power for the outdoor bike and the power for moving the body back-and-forth on an indoor rower. , The Mayhem Aerobic Capacity track include combinations of Run, Bike, Swim, Row, Ski, Bonus, Test, and Challenge workouts at various distances, intensities and recoveries each week so that athletes are best prepared for the unknown and unknowable. ... · Bike Workouts: Assault, Echo, or Airdyne Bike & Concept2 BikeErg or stationary bike. ..., The calories burned are vastly different when comparing the fitbit wrist tracker vs the console on the echo bike. Example the fitbit is setup as spinning exercise and am logging 100+ calories vs 50ish calories on the echo bike. Which # is likely to be more accurate? The Fitbit. Echo bike will calculate mechanical calories based off a set body ..., Echo Bike V3. Hi I just got an Echo Bike with V3 display. Which iphone or apple watch apps have you been able to use so far? Echo heart rate app is able to display heart rate on the Echo bike but does not have tracking option for the apple watch. Zwift connects to speed but I don't need a virtual world to drive around in., The Assault Bike costs $749 with free shipping, which puts it in between the Echo Bike and some of the more budget-friendly bikes on this list. As such, it offers a very nice value. I don't think this bike is as nice as the Echo Bike, but if you're looking to save a little money and don't mind the louder chain drive, it's a great option., Linchpin recommends 1.25x assault bike cals for the bike erg. Example- wod is 12 cals, do 15 on the bike erg. Damper is up to you. I have both and my guess, it's a guess 3/1 ratio. Calories is a measure of work done, so you don't need to scale it from that regard- however the time it takes to do them will be different. So it's kind of a mixed ..., This USB power cable is available in either black or white color. The USB plug that you use for this power cable must output at least 2 amps in order for it to be able to convert the 5-volt USB output to the 12-volts that the Echo Dot needs. USB 5-Volt to 12-Volt Power Cable. Black Cable. Buy on Amazon., Fast forward 8 weeks, and I feel better than I have in over 5 years. Unfortunately jumping on the Echo/ Assult bike everyday doesn't get any easier. For those wondering my 100 cal time has dropped from 9:57 to 5:45 in that period. ... I've run the whole program, but I've also known more than one regional level Crossfitter who has tried to ..., What i didn't know (and wish i did) about buying a bike onlineEcho bike calorie chart Rogue echo bike calorie conversion chartHands on bike: dahon muex: compatibility checking for 10 speed ultegra. Echo bike conversion chartEcho rogue calorie undeniable heatonminded Crossfit 1000m hallo folks roguefitness convert rowing ratioEcho wellfit ..., The Echo EC2-13 bike rack is a wave style rack with a thirteen bike capacity. Bikes can be parked and secured between each loop and one on each side. The Echo serpentine rack can be surface or inground mount. Materials. Tubing - 2 3/8" dia. schedule 40 steel tubing; Foot Plates - 7 1/2" dia. x 1/4" stainless steel; Options, Updated: August 31, 2021. By Robbie Wild Hudson. Echo Bike Workouts are a great way to build mental and physical endurance, as well as improving your cycling skills within a CrossFit context. The Echo Bike is a highly effective conditioning tool., The Ski-Erg Calorie Conversion Chart. To make things easier, we’ve created a Ski-Erg Calorie Conversion Chart that you can use to quickly determine how many calories you’ve burned during your workout. Speed (m/s) Power Output (Watts) Estimated Calories Burned per Minute. 1.5., Assault Airbike vs Rogue Echo Bike. Comparing the Rouge Echo Bike vs Assault bike is fairly common, as these are the two most often used bikes at fitness boxes.. Having said that, more and more people have found these two bikes to be some of the best forms of cardio they can do, which has caused them to become popular buys for home or garage gyms, as they're more easily stored compared to ..., It frees up both hands in the shop. The battery of the Swytch Bike e-bike conversion kit in the side pocket of Camelbak MULE 22L pack. (Image credit: Paul Grele) The optional thumb throttle was ..., Pay in 4 interest-free installments of $19.50 with. Learn more. Add to cart. SpeedCut™ Nano Conversion Kits are designed to optimize saw performance. Kit includes a 12in Bar, 51DL Chain, and Nano Sprocket to convert saw to SpeedCut Nano 80TXL system. 12" & 14" - ECHO CS-2511T Fits various ECHO saw sizes. For saws in the 1-3hp range (20-38cc ..., Budget Single Speed Conversion. A basic single speed conversion needs the following: Removal of your smallest front chainrings so only one remains. Ideally this is a non-ramped chainring. A single cog on the rear. If you are on a budget, something cheap like a Shimano DX/BMX style cog will work fine., Incorporating the echo bike into a workout immediately makes it 10x nastier, but this post is here to show you how you can get a good workout in with just the bike on it's own.. Whether your goals are muscular endurance, aerobic capacity, intense fat loss, or muscle gain, the following workouts can be chosen specifically for whichever you are trying to accomplish., This is a kind of voice reflection that reaches the listener with some delay relative to the original sound. In order for the sound to be perceived exactly as an echo, and not as an echo, the signal delay must be at least 50 ms. To achieve a gradually decaying echo, its copies, muffled in amplitude, are superimposed on the main signal.