mjames2393's articles:

Items(25) /3 Next >> Last >|

Estimating time offset between two audio signals. 22 5 (4/19/2013 2:46:18 AM) comp.dsp I'm looking for some recommendations on real-time algorithms which are able to estimate the time offset (delay) between two signals. One signal is the source signal (speaker signal). The other signal is a fi... Mauritz

Audio processing of more than one mic input 10 6 (4/9/2013 1:47:00 PM) comp.dsp What is a typical setup for processing multiple microphone signals? In the system I'm currently working with, the audio driver calls a callback= function which pushes the microphone audio to a queue and it... Mauritz

Estimation of delay between speaker signal and microphone signal (AEC) 32 15 (3/22/2013 2:23:15 PM) comp.dsp I need to estimate the delay between a loudspeaker signal and a microphone signal in real-time. The delay might be as large as 400ms. If I buffer up both time domain signals in a 500ms buffer, what is the be... Mauritz

RTP/SILK Codec Question 2 8 (1/16/2013 5:47:28 PM) comp.dsp Let me start by clarifying the terminology that I will be using in the following. A codec packet is the compressed data which an encoder returns when it is called once. An RTP payload can consist of one c... mjames2393

Off-Topic: Circuit breaker. Latch position? 9 17 (12/14/2012 1:22:49 AM) comp.dsp I bought a new home in December 2011. After some time the kitchen lights and the lights in the living room started to switch off randomly. Some days it would happen 3-4 times in a row. Other days it would on... Mauritz

Evaluating loudspeakers 31 25 (10/10/2012 2:33:07 AM) comp.dsp If you don't have a lot of money to spend but you want to estimate the frequency response of different loudspeaker setups what is the best way to do it? I bought a very nice microphone and built a box with... Mauritz

SHARC 21469 2 26 (8/17/2012 10:18:45 PM) comp.dsp Hi, I'm having a bit of trouble modifying one of the TalkThru projects that comes with SHARC 21469 EZKit from AD. I am trying to implement this signal chain: ADC (48kHz) -> SRC (48kHz -> 16kHz) -> Aud... Mauritz

Sign-extension on ADSP SHARC 21469 ?? 4 53 (8/11/2012 4:32:55 PM) comp.dsp Hi, I have some 24bit audio data (stored in an unsigned int). I have to sign extend it to 32 bit. From what I understand, I just look at bit 23 (counting from bit0) which is the sign-bit. If it is 1 then... Mauritz

mex, c, right-shift 1 47 (7/20/2012 5:14:58 PM) comp.soft-sys.matlab Hi For some reason my C code below returns -32767 as a result when calculating what -32767 >> 96 is. I have stored the code in a file called rightshift.c and I compile by executing the following : me... Mauritz

Fixed point math question 27 51 (7/15/2012 11:40:56 PM) comp.dsp Hello, If I have an signed 32-bit number, X, and divide it by ...say 32768...I could implement that as a right-shift X >> 15 But that seems like bad fixed point math. If we define E1 = X >> 15 E2... Mauritz

mjames2393's replies:

Items(18) /2 Next >> Last >|

Fixed point math question 27 51 (7/15/2012 11:40:56 PM) comp.dsp Hello, If I have an signed 32-bit number, X, and divide it by ...say 32768...I could implement that as a right-shift X >> 15 But that seems like bad fixed point math. If we define E1 = X >> 15 E2... mjames2393 (69)

Sign-extension on ADSP SHARC 21469 ?? 4 53 (8/11/2012 4:32:55 PM) comp.dsp Hi, I have some 24bit audio data (stored in an unsigned int). I have to sign extend it to 32 bit. From what I understand, I just look at bit 23 (counting from bit0) which is the sign-bit. If it is 1 then... mjames2393 (69)

SHARC 21469 2 26 (8/17/2012 10:18:45 PM) comp.dsp Hi, I'm having a bit of trouble modifying one of the TalkThru projects that comes with SHARC 21469 EZKit from AD. I am trying to implement this signal chain: ADC (48kHz) -> SRC (48kHz -> 16kHz) -> Aud... mjames2393 (69)

Off-Topic: Circuit breaker. Latch position? 9 17 (12/14/2012 1:22:49 AM) comp.dsp I bought a new home in December 2011. After some time the kitchen lights and the lights in the living room started to switch off randomly. Some days it would happen 3-4 times in a row. Other days it would on... mjames2393 (69)

noise #2 15 30 (12/23/2012 2:14:23 PM) comp.dsp Sirs, I have few questions on the characteristic of noise when it comes to processing signals with noise: 1) does it really matter what is the shape of a noise - ramp, triangle, sinusodal etc. 2) does ... manishp

RTP/SILK Codec Question 2 8 (1/16/2013 5:47:28 PM) comp.dsp Let me start by clarifying the terminology that I will be using in the following. A codec packet is the compressed data which an encoder returns when it is called once. An RTP payload can consist of one c... mjames2393 (69)

VDSP is dead 12 15 (2/20/2013 4:33:17 PM) comp.dsp According to the information from ADI website, Visual DSP exists no longer. Crosscore is official successor, albeit not quite compatible. Does this imply near termination of BlackFin and Sharc product lines?... nospam (2544)

Estimation of delay between speaker signal and microphone signal (AEC) 32 15 (3/22/2013 2:23:15 PM) comp.dsp I need to estimate the delay between a loudspeaker signal and a microphone signal in real-time. The delay might be as large as 400ms. If I buffer up both time domain signals in a 500ms buffer, what is the be... mjames2393 (69)

Audio processing of more than one mic input 10 6 (4/9/2013 1:47:00 PM) comp.dsp What is a typical setup for processing multiple microphone signals? In the system I'm currently working with, the audio driver calls a callback= function which pushes the microphone audio to a queue and it... mjames2393 (69)

Estimating time offset between two audio signals. 22 5 (4/19/2013 2:46:18 AM) comp.dsp I'm looking for some recommendations on real-time algorithms which are able to estimate the time offset (delay) between two signals. One signal is the source signal (speaker signal). The other signal is a fi... mjames2393 (69)