Khubaib Ahmad

19 Questions 43 Answers 0 Followers

Questions related from Khubaib Ahmad

Dominant Speaker Selection in a Proximity Cluster of Smartphones with Arbitrary Positions?

I am working on an algorithm for dominant speaker selection in a closed proximity cluster of smartphones (iOS and Android) with arbitrary positions. The smartphones act as clients, and one of them...

25 July 2023 1,381 0 View

How to normalize Loudness on different Android Smartphones playing same audio simultaneously?

Hi, I have been working on a conference solution based on a smartphone grid. Right now, I am stuck on Android Smartphones, where although I have managed to normalize loudness programmatically...

19 October 2022 5,781 4 View

How to remove or smooth the comb filter effect in real time audio signal mixing?

Hello, I have been working on a project where I have to mix multiple audio signals of the same source coming from different slave smartphones on one master smartphone in a distributed way. Now I...

17 September 2021 9,757 5 View

What is the buffer size or tap length of built in AEC of Android and iOS smartphone?

Hi, I am curious to know what is the buffer size of builtin AEC used by Android and iOS smartphones? What is the common tap length used by such modern phones in order to cater to...

29 June 2021 6,202 1 View

How to measure acoustic latency when AEC, NS and AGC of Android smartphone is enabled?

Hello, I am trying to find acoustic round-trip latency of Android smartphones. I have using the technique of where I play a beep and listen to it through the phone and then perform convolution...

18 June 2021 9,984 4 View

Is there any research paper or algorithm to find dominant speaker in localized cluster of Smartphones (iOS and Android)?

Hello, I have been developing an algorithm using DSP techniques to select a dominant speaker in a conference in which a cluster of smartphones have been used each with microphone and speaker...

08 April 2021 8,520 2 View

Is there any way to select optimal overlapping length of audio chunks for real time acoustic echo detection?

Hello, I have been working on acoustic echo cancellation while following the research paper : Echo Detection and Delay Estimation using a Pattern Recognti... Since I am working on real-time...

24 March 2021 9,905 5 View

Why there is static noise and voice distortion after convolving it with impulse response?

Hello, I have been working on the decorrelation of audio signals while following this paper : "The Decorrelation of Audio Signals and Its Impact on Spatial Imagery " So far I have generated...

04 March 2021 3,864 9 View

Is there any research paper that implemented SIMO or MIMO acoustic echo cancellation on smartphone (Android or iOS)?

Hi, I am working on a Multiphonic acoustic echo cancellation algorithm. It seems that it is quite complexed and computative for smartphones. I just wanted to know if there are any research papers...

25 February 2021 4,406 4 View

How to decorrelate same audio signal on multiple loudspeakers playing same audio signal in synchronization?

Hi, I have been working on multi-loudspeaker and single mic acoustic echo canceller ( more than a typical stereophonic echo canceller). I have researched and came to know that we have to...

15 February 2021 1,193 6 View

Need a research paper for multi speaker and single microphone acoustic echo cancellation?

Hi, I am working on a problem that involves multiple smartphones/tablets. All devices are playing the same sound with synchronization difference up to +- 5ms. Now, there is an echo issue and I...

03 February 2021 6,108 3 View

How to subtract echoed signal from mixture of voice and echo signal?

Hi, I am working on an echo removal project. So far, I have successfully identified the far-end signal of length 21 ms at a sampling rate of 48000Hz whose echo is present in my near-end signal of...

27 November 2020 5,690 5 View

How to plot spectrogram from fft magnitude spectrum ?

Hi, I have been trying to plot a spectrogram(in c++) based on my self created Audio signal. So far by following tutorials, I have performed these operations programmatically : 1. window function...

10 April 2020 9,353 0 View

Acoustic Fingerprinting and temporal displacement between two same digital audio signals?

Hello, I have been working to find the temporal displacement between two smartphones in order to synchronize the playback. I came across a paper which inferred to use acoustic fingerprinting and...

17 January 2020 5,591 3 View

Why do most VoIP applications or algorithms related to it use 10ms of data?

I have read different research papers on VoIP and algorithms related to VoIP (mostly digital audio signal processing) such as VAD, Sound mixing, etc. I am curious that most of these algorithms...

12 November 2019 3,860 8 View

How to differentiate digital audio signals based on loudness or sound difference?

I want to select the loudest digital audio signal (PCM-16bit) from various digital audio signals(PCM-16bit). I have tried to do it on a dB basis but unfortunately, there is hardware dependency...

31 October 2019 1,774 6 View

How to select Highest dB real time audio stream from multiple real time audio streams?

So far, I have been able to calculate dB of real time audio stream. On the basis of the highest dB, I have selected the loudest audio stream from multiple audio streams. My problem arises when...

25 October 2019 1,926 4 View

How to Temporal Synchronize multiple different Digital Audio Signals?

Are there any DSP techniques to temporally synchronize two different or more digital audio signals without timestamp information?

22 October 2019 433 14 View

Acoustic Echo Cancellation from PCM 16 bit arrays

Hi, I am keen to know the basics to remove echo knowing FarEnd Signal and NearEnd Signal. I have read research papers in which its commonly said: y(n) = hTx where hT is the room impulse response...

01 January 1970 2,982 3 View