sound isolation

Started by jrsmith5601 in comp.dsp12 years ago 14 replies

Im trying to find software that allows me to import a song from a band and have that sound broken down into all its different components (like in...

Im trying to find software that allows me to import a song from a band and have that sound broken down into all its different components (like in CSI when they have all the different sound waves and can listen to each one individually).. not sure if this is possible so any suggestions would be helpful


cross correlation

Started by maz_p5 in comp.dsp12 years ago

Hello, My name is maz and I am working on simple sound source localization. My question is how do I calculate the delay between these two sound...

Hello, My name is maz and I am working on simple sound source localization. My question is how do I calculate the delay between these two sound signals using cross-correlation in matlab. (I am not considering sound for the start as i have taken the readings in a sound free environment). I do not know since I am still learning. Can you please explain with the help of the matlab code. Thank you.


Why is my level adjustment distorting the output?

Started by Anonymous in comp.dsp14 years ago 2 replies

Hi all. I've got some 16-bit PCM data, and I'm trying to add a level adjustment to my code. I thought it would be really straight...

Hi all. I've got some 16-bit PCM data, and I'm trying to add a level adjustment to my code. I thought it would be really straight forward, but it's causing a lot of distortion when I try to lower the level. It sounds bad most of the time if I increase the level, but I'm pretty sure that's just clipping. If the db_gain variables are set to 0, everything sounds fine. Here is the code:...


Noise convolution?

Started by Michel Rouzic in comp.dsp11 years ago 3 replies

These last few days using my program Photosounder ( http://photosounder.com ) I've been experimenting with a new sort of weird reverb-like...

These last few days using my program Photosounder ( http://photosounder.com ) I've been experimenting with a new sort of weird reverb-like effect on sounds (detailed with examples here http://photosounder.com/blog/2009/05/motion-blur-sound-reverberation.html ) and people who heard the result expressed their interest in me making a real-time VST effect out of it. The problem is that since it'...


Re: Opposite of Mu-law?

Started by Ben Bradley in comp.dsp16 years ago

In rec.audio.tech,comp.dsp, Richard Owlett wrote: > Ben Bradley wrote: > [snip] > > The music industry 'standards' for making a CD...

In rec.audio.tech,comp.dsp, Richard Owlett wrote: > Ben Bradley wrote: > [snip] > > The music industry 'standards' for making a CD have changed in the > > past decade or so. A song that sounds 'louder' is, at first listen, > > deemed more interesting and exciting, so it will sell more CD's than a > > clean-but-not=as-loud song, so record labels are making songs sound


sound delay box

Started by Aleksander Wittlin in comp.dsp15 years ago 7 replies

Hi all, I am looking for a simple and cheap design of a sound delay box for science fair exhibit. It should simply delay microphone...

Hi all, I am looking for a simple and cheap design of a sound delay box for science fair exhibit. It should simply delay microphone signal within the range (regulated) from 0.1 to 5 seconds. Sound quality does not really matter. I considered a PC with sound card (bulky) or professional audio console (expensive). Perhaps a simple DSP board with codec and some memory plus a small preamp...


Sound synthesis and signal continuity

Started by randirandi in comp.dsp11 years ago 2 replies

Hi, I am doing some experiments on sound synthesis. I've made a simple plucked string sound synthesizer (with MIDI input), but I'm experiencing...

Hi, I am doing some experiments on sound synthesis. I've made a simple plucked string sound synthesizer (with MIDI input), but I'm experiencing some problems with the end of notes. When I hit and then release a key on my MIDI keyboard, I can hear an annoying little sound because of the signal going suddently to zero when I stop the note synthesis. I tried to figure out how software like a ba...


Audio vs Video

Started by Vladimir Vassilevsky in comp.dsp13 years ago 12 replies

Just an observation: the largest part of a modern computer game is the library of the miscellaneous sound samples. Announcements, dialogs,...

Just an observation: the largest part of a modern computer game is the library of the miscellaneous sound samples. Announcements, dialogs, nature, music, etc. Isn't it strange that the video part of a game is produced by the real time rendering of some kind of a simple model of the reality, whereas the audio is stored as the samples of the live sounds? Why the fairly sophisticate...


Post-doc in Acoustic Event Detection (US citizens only)

Started by Anonymous in comp.dsp14 years ago 65 replies

The International Computer Science Institute (ICSI) invites applications for a postdoctoral Fellow position in acoustic event detection. The...

The International Computer Science Institute (ICSI) invites applications for a postdoctoral Fellow position in acoustic event detection. The Fellow will be working with Nelson Morgan, along with international colleagues, in the area of the detection of one particular target word and/or sound in the background of all other possible words or any other realistic sounds. The applicant is expected...


sound card AM Transmitter

Started by Masood in comp.dsp12 years ago 28 replies

Hi All, I want to transmit AM RF signal (1khz to 20 Khz) using sound card. The audio out of sound card will be connected to Antenna...

Hi All, I want to transmit AM RF signal (1khz to 20 Khz) using sound card. The audio out of sound card will be connected to Antenna directly. i need software that take sound file and generate AM RF signal for the above range and produce desired AM signal to be transmited on air, high out put power is not required, I am unable to find any software, Any help by anyone will be highly apprec...


Sound Intensity

Started by HardySpicer in comp.dsp13 years ago 13 replies

We are often told that sound intensity (I assume Power) goes down as the inverse square of distance. However, I believe this is also frequency...

We are often told that sound intensity (I assume Power) goes down as the inverse square of distance. However, I believe this is also frequency dependent (as with e/m waves). What is the equation for a sound source received at a distance d with frequency f say? I read somewhere that low frequency sound (say 50 Hz or so) will travel vast distances and is also humidity and temperature dependent....


Sound gaps

Started by Anonymous in comp.dsp11 years ago 4 replies

Hello, A while ago this group and comp.compression were very helpful in pointing to some websites to help develop my software sound...

Hello, A while ago this group and comp.compression were very helpful in pointing to some websites to help develop my software sound driver (note: aside from the DAC all processing/filtering is done in software.). Now I have a new problem where I don't know where to look for the answer(s) so I am begging for a little help. After lots of work in improving sound quality I just ran i...


Crossover networks. Can someone recall the name?

Started by Jerry Avins in comp.dsp14 years ago 72 replies

Vladimir Vassilevsky wrote: > > > Jerry Avins wrote: > > > > A linear-phase phono equalizer completely louses up the transient >...

Vladimir Vassilevsky wrote: > > > Jerry Avins wrote: > > > > A linear-phase phono equalizer completely louses up the transient > > response. A "perfect" linear-phase speaker crossover often sounds much > > worse that the minimum-phase analog approximation that it replaced. > > > > Don't look at the transient response and linear phase will sound just as > good as the minimal pha


Interpolation

Started by UD.RaggedRobin in comp.dsp11 years ago 6 replies

I seek a program that will take two sound files (A and B) of approximately equal duration and produce a third sound that is a blend of A and B...

I seek a program that will take two sound files (A and B) of approximately equal duration and produce a third sound that is a blend of A and B throughout its duration. i.e. I want to be able to produce the middle sound shown below. AA AA AA AA AA ab ab ab ab ab


LMS

Started by maz_p5 in comp.dsp12 years ago 6 replies

Hi, I am working on sound localization system. I want to find the co-ordinate of the sound source by least mean square method in MATLAB. I...

Hi, I am working on sound localization system. I want to find the co-ordinate of the sound source by least mean square method in MATLAB. I have the co-ordinates of the 4 microphones and the relative distance between mic 1 to the source to mic 2 to the source, i.e. the time delay*speed of sound. I even have the formulas but I have no clue on how to crack this: d12=sqrt((x1-xs)^2+(y1-ys)^2)...


newbie: What is sound & how to invert it.

Started by news in comp.dsp16 years ago 2 replies

Hi, I am a programmer and recently got interested in the mechanics of a sound. Here is what i have done till now and will need your help to...

Hi, I am a programmer and recently got interested in the mechanics of a sound. Here is what i have done till now and will need your help to proceed from there. I am capturing sound from my microphone. And now I need to send out it's inverse( sort of 'noise cancellation' - but I am aware of the difficulties with noise cancellation). WHAT I am trying to understand is what is meant by 'inv...


The instruments don't sound the same. What am i doing wrong ?

Started by bah in comp.dsp9 years ago 7 replies

I am using pure data. I am using -- kick, snare, hats to create a simple beat with a bassline. But for some reason, each instrument does...

I am using pure data. I am using -- kick, snare, hats to create a simple beat with a bassline. But for some reason, each instrument does _not_ sound the like the one i listen in, say dnb music. I have added reverb to each instrument but still there is no change. They sound too hollow and artificial. From what I can gather, I should be using a 1) EQ filter 2) A constant ambient b...


NN Copying of a guitar effect with Reverse Engineering

Started by MustafaUmutSarac in comp.dsp11 years ago 2 replies

I have a PC based guitar effects software. Some of the effects are great. First is Vienna Philharmonic Concert Hall Acoustic effect , Second...

I have a PC based guitar effects software. Some of the effects are great. First is Vienna Philharmonic Concert Hall Acoustic effect , Second is a tube based guitar amp effect. I want to analyse these input and output sounds digitally and train a dsp neural networks chip . If I am not wrong , I will be needed + A/D + DSP CHIP for finding the spectrum peaks of the input sounds-...


Basic sound card access

Started by caalip in comp.dsp13 years ago 3 replies

Dear Neighbors, My group at school is working on a project, and I would like infomation about basic sound card input/output. i guess...

Dear Neighbors, My group at school is working on a project, and I would like infomation about basic sound card input/output. i guess what I would very like to see is what functions read form a sound card. Thanks for any ideas You can give me.


Sound Localization using Sound Amplitude

Started by jigajigajoo in comp.dsp9 years ago 20 replies

I'm trying to figure out a way, given an array of 4-6 omnidirectional microphones in ideal conditions, to use the amplitude of a signal...

I'm trying to figure out a way, given an array of 4-6 omnidirectional microphones in ideal conditions, to use the amplitude of a signal to localize the location of that sound. I'm targeting this application to a microcontroller (an Arduino), which has a max sample rate of maybe 2kHz (per mic), and so trying to do TDOA analysis on the signal is hard. Not only that, but any difficult DSP is defin...