Acoustic Echo Cancellation, a feature of Adobe Flash.
Questions tagged [aec]
68 questions
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vote
1 answer
Echo cancellation with Core audio APIs
Did anybody try cancelling echo with Windows Core audio API? I wonder how good it works.
Alexander Shmuratko
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1
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1 answer
Facing trouble to cancel acoustic echo using speex in Android
i am trying to cancel echo but couldn't able to cancel even using a very simple example.Frame size 160 Tile Length 100
audioRecord.read(mic,0,mic.length);
audioData =…
Sureshkumar Menon
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Flash AEC echo cancel
Does anyone know of an online demo of the new flash AEC feature ?
I've seen plenty of demos for RTMFP using webcam, but none that shows of
AEC.
user967007
0
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1 answer
AEC in Flash, getEnhancedMicrophone
Have next problem:
var mic:Microphone = Microphone.getEnhancedMicrophone();
mic.setLoopBack(true);
And I don`t hear any sound... What is it?
When I write Microphone.getMicrophone() all work right and I hear sounds.
KwI
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NLMS Echo Cancellation: How do we estimate when the time-step at which the Far-End Echo will be generated?
I'm new to this domain. From my understanding, we do the following in our algo:
Error = Desired - Expected Output
That is,
E = (Near End voice + Far End Echo) - (Far End voice * Adaptive Weights)
Here, I assume the Far End voice is a block from a…
spade123
- 11
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How do we use LMS for noise cancellation in real-time?
The error to update the weights for LMS is given by:
e(n) = d(n) - y(n)
Assuming e as the error, d as the desired signal and y as the estimated output at given time step n.
How do we know the value of d(n) if we are using it real-time?
In a…
spade123
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0
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1 answer
how to tune WebRtc Aec, echo cancelation?
I added webrtc aec to my project, agc, ns too..
but VoIP quality is not good,
echo is not removed completely and howling.
is there any project to refer how to do tuning?
or is there any way to tune??
(i don't know how to set msSndCardBuf value in…
koseonjae
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Using AEC(webrtc) instead of AECM(webrtc)
I used aecm(webrtc) on my ARM-based embedded device for voice communication. Now, I'm trying to change aecm to aec for double-talk echo cancellation.
It's simple in aecm:…
azbo
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Android Camera Error: aec_calculate_sensitivity binning is less than 1
I am developing an Android app on Unity that uses the Camera (front and back) and once the app starts this error spams about 20 times a second in logcat. It stops when I close my app again. I have tried to find any information about…
ObiWanBennobi
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What is this high pitch noise I hear when calling using my VoIP app?
When working over a VoIP app, I struggle with Acoustic Echo Cancellation.
I dumped the sounds - far-end, near-end and output. And the output is good, it doesn't contain echo. But when calling the Android smartphone produces this high pitch sound…
rightaway717
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2 answers
Python adaptfilt 2.0 FloatingPointError: invalid value encountered in multiply
I am trying to use the "echo cancel" example in python 3.4 from the library adaptfilt 2.0 which looks like this:
import numpy as np
import adaptfilt as adf
# Get u(n) - this is available on github or pypi in the examples folder
u =…
Josef
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0
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1 answer
android speex mp3 file echo cancellation
I'm working on an application which is recording the microphone's input and at the same time has to be able to play an MP3 file via Loudspeakers.
I need to cancel the echo of the MP3 file. I've tried to use AcousticEchoCanceler, but it didn't…
Straw.Hat
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0
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1 answer
In built AEC Android performance
Does anyone know if the in-built AEC that ships with Android post Jelly Bean works well? I am trying it and the output I get is very low in volume and very choppy. It does cancel all the speaker output but the leftover user input via mic is in…
Adi
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when we are testing the webrtc in the chrome is it uses the native code and jni code that written in android
I am working on webrtc project in my office.
And i need to test webrtc for to know the flow of the function calls.
i tried testing the webrtc using google apprtc from their website appspot in my android chrome browser and other browsers.
I also…
optimus prime
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how to test webrtc aec in android?
Hi i want to test the webrtc aec and i want to know how it works..
Because i am going to integrate speex.
I dont know how to do all the things but i have to do.
So please give me the information about how to test and is there any application to…
optimus prime
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