Phase between multiple channels with phase vocoder pitch shifting

Started by jungledmnc in comp.dsp12 years ago 3 replies

I have implemented phase vocoder pitch shifting, started from Bernsee's code and tweaked it, but basically it works pretty much the same way. I...

I have implemented phase vocoder pitch shifting, started from Bernsee's code and tweaked it, but basically it works pretty much the same way. I ran into a trouble with stereo sounds however - since each channels is different, the "output phase accumulator" used in synthesis step gets different, which obviously results in "wider" output. When you then plug in a monophonic source, it gets even worse...


Electrical Engineering Careers in USA

Started by dbell in comp.dsp16 years ago 36 replies

I got a publication from IEEE last week with an article about the US EE job market. From peak EE unemployment of 6-7% a couple of years ago...

I got a publication from IEEE last week with an article about the US EE job market. From peak EE unemployment of 6-7% a couple of years ago we are back to approx 2% EE unemployment, about the same as in 2000-2001 before the job situation took a dive. The article points out that while that sounds like a good thing, the number of US EEs dropped from 440,000 in 2000-2001 to 340,000 in 1st quart...


LPC Matlab demo, help needed for 16khz signal

Started by awaisk in comp.dsp13 years ago 1 reply

Hello I have 16KHz signal, i want to use "LPC Analysis and Synthesis Model in Matlab" "dsplpc" to perform a simulation of LPC. I am having...

Hello I have 16KHz signal, i want to use "LPC Analysis and Synthesis Model in Matlab" "dsplpc" to perform a simulation of LPC. I am having problem in defining frame length and buffer size, the output is not of good quality and it sounds like a signal sampled at 8Khz. I found that the signal behaves to be WSS at about 310 samples using the spectrogram utility. So then I used samples / ...


Improving the SNR of a mic

Started by Michel Rouzic in comp.dsp16 years ago 20 replies

I use a low end speaker connected to my mother board's AC97-type ADC to input sounds. The problem is that I have a lot of noise. How could I...

I use a low end speaker connected to my mother board's AC97-type ADC to input sounds. The problem is that I have a lot of noise. How could I improve the SNR and get rid of a big part of the noise? (I'm not talking here about post-processing but about getting the raw signal from the ADC to a better SNR). Is my low end speaker the problem or is it rather my ADC that's introducing the most noi...


regarding musical noise

Started by khurram712 in comp.dsp13 years ago 9 replies

Hi everyone i am doing my project in speech processing which involves removal of musical noise after spectral subtraction for removal of noise...

Hi everyone i am doing my project in speech processing which involves removal of musical noise after spectral subtraction for removal of noise in speech signal . i have two problems. 1)i dont know how "musical noise" sounds like.if anyone could post here some link of audio files that do have musical noise then that would be great 2)spectral subtraction requires estimation of noise.can ...


CFP: [RIAO2007] Deadline Extension CFP Large-Scale Semantic Access to Content (Text, Image, Video and Sound) RIAO'2007 Pittsburgh

Started by Anonymous in comp.dsp15 years ago

SUBMISSION DEADLINE EXTENDED TO DEC 15, 2006 RIAO 2007 Large-Scale Semantic Access to Content (Text, Image, Video and Sound) - 8th Conference...

SUBMISSION DEADLINE EXTENDED TO DEC 15, 2006 RIAO 2007 Large-Scale Semantic Access to Content (Text, Image, Video and Sound) - 8th Conference - May 30 to June 1, 2007 Pittsburgh, PA, USA www.riao.org RIAO'2007 will be held at Carnegie-Mellon University in Pittsburgh, Pennsylvania, USA from May 30 through June 1, 2007. The RIAO conferences, organized by the "Centre de Hautes Etudes Int...


Re: Guidelines for a PhD

Started by Ozone Hole near South Pole in comp.dsp18 years ago

Hi Vimal, allnor@tele.ntnu.no (Rune Allnor) wrote in message news: ... > vimal_bhatia2@yahoo.com (Vimal) wrote in message news: ... > > ...

Hi Vimal, allnor@tele.ntnu.no (Rune Allnor) wrote in message news: ... > vimal_bhatia2@yahoo.com (Vimal) wrote in message news: ... > > Rune, I have found a course on Financial Topics in Product Design > > (talks about profit/loss/cash-flow/budget etc) in my department. > > Sounds good, however I


Thanks!!!! Sammy Davis JR.

Started by kiplring in comp.dsp18 years ago 1 reply

I've have that SDK before a long time. But I did't know directx can capture the sound output. Thanks! It will really helps me~ If I...

I've have that SDK before a long time. But I did't know directx can capture the sound output. Thanks! It will really helps me~ If I complete this project, I will hug you and kiss you!


sample rate change of a narrow band signal

Started by fahim in comp.dsp15 years ago 2 replies

I want to change sampling rate of a narrow band signal by a fractional factor of 15/13. The original signal is -60dB or lower after f=0.08...

I want to change sampling rate of a narrow band signal by a fractional factor of 15/13. The original signal is -60dB or lower after f=0.08 (1 corresponds to half the sampling rate). I use matlab upfirdn function and design the anti-imaging/anti-aliasing filter using remez. The problem is that i get small droop in the passband no matter how sharp a filter i have got. I know this sounds a bit vague ...


An old basic question about RTDX without CCS

Started by Ken in comp.dsp17 years ago 1 reply

I knew that whether RTDX without CCS still works is a very old question, and I also knew the answer is NO. My problem is that I don't care...

I knew that whether RTDX without CCS still works is a very old question, and I also knew the answer is NO. My problem is that I don't care whether CCS is running, but I don't want to open my project files. Is the RTDX still working? It sounds funny, but I think "without CCS" is different from "don't open project files". I have burned my Hex file into C6713DSK. But I found that once my ...


Blind boy can echo-navigate by sound

Started by HardySpicer in comp.dsp13 years ago 8 replies

http://www.youtube.com/watch?v=G1QaCeosUmw&feature=rec-HM-rev-rn Fantastic stuff. hardy

http://www.youtube.com/watch?v=G1QaCeosUmw&feature=rec-HM-rev-rn Fantastic stuff. hardy


MFCC, deriving the energy at a specific freq range

Started by Nadav in comp.dsp11 years ago 1 reply

I am executing MFCC with 100msec sliding window on a 10Khz feed, I would like to measure the energy for each Mel Frequency Filter,...

I am executing MFCC with 100msec sliding window on a 10Khz feed, I would like to measure the energy for each Mel Frequency Filter, sounds trivial so far, I would expect the follwoing to give me exactly that: 1. A sliding window in time of e.g. 100msec 2. Applying a window function ( e.g. Hamming ) to reduce leakage 3. executing FFT 4. Applying Mel, Bark ( or whatever ) Frequency Filter ban...


WTD: Sound effects and voice

Started by Donald in comp.dsp15 years ago 2 replies

Does anyone here know how the gou'ld voice is created on the Star Gate series ? Thanks donald

Does anyone here know how the gou'ld voice is created on the Star Gate series ? Thanks donald


[HUMOR?] "Madison Ave" meets DSP

Started by Richard Owlett in comp.dsp6 years ago 11 replies

GMC truck boasts "sound canceling frequency" ;/ Caught the ad this morning, wasn't sure I'd heard correctly. Just saw it again. My ears had not...

GMC truck boasts "sound canceling frequency" ;/ Caught the ad this morning, wasn't sure I'd heard correctly. Just saw it again. My ears had not deceived me.


ad1847

Started by carsten in comp.dsp16 years ago 7 replies

hello, are there some one who have worked with the AD1847 sound codec?

hello, are there some one who have worked with the AD1847 sound codec?


A/D conversion using a via VT1616 chipset

Started by Daniele in comp.dsp15 years ago

HI all, I need to convert one analog signal using my integrated sound card enbadded in a micro-itx motherboard whit kubuntu distro...

HI all, I need to convert one analog signal using my integrated sound card enbadded in a micro-itx motherboard whit kubuntu distro installed. How I can do it in C languages? thanks advance, Daniele


Sound analysis

Started by Shimon M in comp.dsp12 years ago 20 replies

Hello, Everyone, I am designing a software for a course, and it is suppose to do the following: 1. get a wave file 2. analyze it - to notes...

Hello, Everyone, I am designing a software for a course, and it is suppose to do the following: 1. get a wave file 2. analyze it - to notes and instruments that play them 3. enable changing an instrument with another. Yes, I know these are all things that are under research, and that there is no magic solution. Yet, since this is for a course, it doesn't have to be robust - if I can ge...


Increase/Decrease number of Acoustic Event (acoustic emission) in Real-Time

Started by BorisR in comp.dsp15 years ago 1 reply

Hello, I'm running a project related to psychoacoustic and I want to be able to Increase/Decrease the number of Acoustic Event (acoustic...

Hello, I'm running a project related to psychoacoustic and I want to be able to Increase/Decrease the number of Acoustic Event (acoustic emission) of crack sounds in Real Time (for an acoustic wave in the time domain, the signal crosses a preset threshold a certain number of times. To calculate the number of acoustic event you'll just have to count the number of peaks that are above this preset...


sine wave generation

Started by decorr in comp.dsp16 years ago 27 replies

can any one please help me in creatind a sine wave in C/C++ please i also need to play it as a .wav file any random sound within...

can any one please help me in creatind a sine wave in C/C++ please i also need to play it as a .wav file any random sound within sudible frequency will do


dsp56362 versus dsp56361

Started by p in comp.dsp16 years ago 4 replies

Hi All, for the sound card Indigo I/O from EchoAudio I found some reference that it is using the DSP56361. But I cant find any info about this...

Hi All, for the sound card Indigo I/O from EchoAudio I found some reference that it is using the DSP56361. But I cant find any info about this dsp. Can anyone tell the difference to the DSP56362 ? Thanks! P