Finding a selected word in a audio recording file

Started by Anonymous in comp.dsp13 years ago 9 replies

Hi. I want to make a program which let's the user to select a certain word (or sound) from an audio recording and search it for other occurence...

Hi. I want to make a program which let's the user to select a certain word (or sound) from an audio recording and search it for other occurence of it. I am not interested to make the program to recognize that word, but only to find other sounds(words) from the recording which resembles the selected portion of the sound. Please tell me how could I do this. Thank you very much. Paul


Request for Real Digital Real-time Hardware Synth

Started by Radium in comp.dsp15 years ago 2 replies

Sound Blaster 16's FM Synth is the best!!!!!!!!!!!!!!!!!! All *real* *digital real-time* *hardware* synths are...

Sound Blaster 16's FM Synth is the best!!!!!!!!!!!!!!!!!! All *real* *digital real-time* *hardware* synths are the best!!!!!!!!!!!!!!!!!! Nothing sounds more refreshing the sound of its polysynth pads with the central channel removed!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Software synths STINK!!!!!!!!!!!!!!!!!!!!!! Analog synths STINK!!!!!!!!!!!!!!!!!!!!! Sample playba...


Cheap & cheesy way to tell when sound source is pointing at you?

Started by Robert Oschler in comp.dsp14 years ago 6 replies

Hello again, It's me the novice DSP'er who would be king.. er.. frog? :) I want to tell when a sound source is "pointing" towards a...

Hello again, It's me the novice DSP'er who would be king.. er.. frog? :) I want to tell when a sound source is "pointing" towards a microphone. The sound source is mobile, but I have complete control over its movement and sound emission. I can easily play repeatedly a pre-recorded sound from the sound source, which will be identical every time it's played. Obviously, it will not be i...


TB303 digital filters?

Started by Nicholas Nash in comp.dsp15 years ago 3 replies

Hi, I'd be very grateful for some help with the following problem. I know almost nothing of DSP but need to learn enough to code my...

Hi, I'd be very grateful for some help with the following problem. I know almost nothing of DSP but need to learn enough to code my own software synthesizer which is capable of generating some basic sounds - enough for some simple music. I'm not looking any sound in particular, just some I can use for some music (probably acidhouse or something). It is essential that I synthesize the sam...


Sound chip recordings... How is it done?

Started by Trains in comp.dsp13 years ago 2 replies

Sound chip (DSP) recordings... How is it done? Pardon my ignorance and naivety, but.... A group of model railroaders would like to...

Sound chip (DSP) recordings... How is it done? Pardon my ignorance and naivety, but.... A group of model railroaders would like to customize/personalize the train sound announcements that have been recorded on the sound chip on their locomotives and railcars. Is there a website that, in layman's language, explains how sound effects are "recorded" on a sound chip? ... and, how one would/c...


acoustics Comparison

Started by aktr512 in comp.dsp5 years ago 1 reply

Hii I am trying to compare two .wave files(sounds of a device). one is reference file and i have to compare new file with it. how should i...

Hii I am trying to compare two .wave files(sounds of a device). one is reference file and i have to compare new file with it. how should i consider the loudness of sound? i am using cross-correlation , coherence and positive peaks difference techniques in parallel


Source Separation

Started by dbormpou in comp.dsp11 years ago 14 replies

Hello I am a biologist and i am trying to eliminate certain sounds from a stereo recording eg the sound of cars from the recording of a...

Hello I am a biologist and i am trying to eliminate certain sounds from a stereo recording eg the sound of cars from the recording of a park, without loosing a lot in audio quality. I have some experience in audio and computers though i am not familiar with programming I need suggestions on some programms i can use for this purpose Thanks Dimitris


Sound over a phone line using voice modem

Started by Mark in comp.dsp15 years ago 3 replies

Hi, I am trying to play/record sound from my sound card over a phone line using the modem. So I have a couple of cabels connecting the...

Hi, I am trying to play/record sound from my sound card over a phone line using the modem. So I have a couple of cabels connecting the modem with the sound card. I have a standard full-duplex voice modem. I have tried different variations of AT+VLS command, but I can only receive sound from the line into the sound card (at+vls=5) I still cannot get the sound from the sound card into th...


How to go from sound analysis to sound synthesis?

Started by Anonymous in comp.dsp14 years ago 2 replies

Hi, Everyone! If I have analyzed a sound and have its spectrogram, how can I utilize that information for sound synthesis? Thank You Very...

Hi, Everyone! If I have analyzed a sound and have its spectrogram, how can I utilize that information for sound synthesis? Thank You Very Much. Truly Yours, Simon Dexter


Program for real time analysis of sound?

Started by SoundOff in comp.dsp12 years ago 4 replies

Hello I?m investigating an irritating sound in the building I live in. The sound disappears at 22.58 a clock. I have traced the sound to...

Hello I?m investigating an irritating sound in the building I live in. The sound disappears at 22.58 a clock. I have traced the sound to about 144 Hz with a program called Spectran. There I can se that it disappears at 22.57 a clock. The janitor says it may be a water circulation pump in the seller that makes the sound. I would want another program that allows filtering the...


Matlab implementation of adaptive noise canceler?

Started by Fred Marshall in comp.dsp11 years ago 4 replies

I'm trying to filter out some nasty noise from an audio recording. It appears to be periodic from the sound of it - rather like a buzz saw.....

I'm trying to filter out some nasty noise from an audio recording. It appears to be periodic from the sound of it - rather like a buzz saw.. Maybe 60Hz and 120Hz components from the look of it. It seems fairly constant in the background and is more noticeable in quiet sections. At least it sounds constant enough that subtracting it out might be a good strategy. The issue is getting a...


U-Law compressed sound - best format when extract from .mov?

Started by Andrew Thompson in comp.dsp13 years ago 6 replies

I have some Quicktime MOV's that I recorded on my camera with the lens cap on, purely for the sound. Player software indicates the sound is...

I have some Quicktime MOV's that I recorded on my camera with the lens cap on, purely for the sound. Player software indicates the sound is recorded as U-Law, 16KHz, 8bit, mono. I want to extract the sound to a separate (sound specific) format for further editing, and am offered the choices (in current software) of MP3, Wav, AIFF and AU. The ideal is to get a sound-only rendition of t...


append synthesized sound frames created via additive synthesis

Started by louis in comp.dsp13 years ago 9 replies

Hi there, I am synthesizing a particular sound using additive synthesis. Hence I dont have to do any FFT's or IFFT's, I basically sum the...

Hi there, I am synthesizing a particular sound using additive synthesis. Hence I dont have to do any FFT's or IFFT's, I basically sum the individual sinusoids whose phase, frequency and amplitude components I know, to produce a complex sound. My problem is that instead of synthesizing the full 10 seconds of sound all at once, I need to be able to create them in small 'sound frames', which w...


Synthesizing Engine Sounds

Started by Tim Wescott in comp.dsp6 years ago 34 replies

I'm toying with a notion which is probably never going to come to fruition, but has me thinking hard (and having fun in the thinking). Part...

I'm toying with a notion which is probably never going to come to fruition, but has me thinking hard (and having fun in the thinking). Part of it is to realistically synthesize an engine sound based on the speed of a rotating shaft. Think about a playing card in the spokes brought to the digital era. I'm pretty sure that much of an engine's exhaust note is basically an impulse or a ...


Audio synthesis problem

Started by Brent in comp.dsp12 years ago 2 replies

Hi, I would like to generate an audio clip with a varying frequency. A few attempts using either matlab/octave or Python code have made...

Hi, I would like to generate an audio clip with a varying frequency. A few attempts using either matlab/octave or Python code have made "interesting" sounds but not what I'm looking for yet. The sound I want will have an initial frequency F0 which will shift (interpolate) to a frequency F1 midway through the clip, and remain at F1 until the end. For example, in a two-second clip the fr...


filter driver ?

Started by Lior in comp.dsp13 years ago 2 replies

Hello guys, My name is Lior. I need your help with a project I am currently working on. I need to catch sound traveling from the modems...

Hello guys, My name is Lior. I need your help with a project I am currently working on. I need to catch sound traveling from the modems speaker phone to the sound board (SB). the sound is not traveling with wave-in/out commands but in a certain driver level, cause all of the sound when a conversation is started, is directed to the SB automatically (even when I track the number of current...


Manipulating the derivative of a sampled sound

Started by Ross Clement (Email address invalid - do not use) in comp.dsp13 years ago 3 replies

Hi. This is just a thought exercise, which could easily be downright silly, badly thought out, entirely pointless, or generally a waste of time...

Hi. This is just a thought exercise, which could easily be downright silly, badly thought out, entirely pointless, or generally a waste of time for any number of other reasons. But that never stopped me before. It's possible to store sampled versions of waveforms, single samples which are looped, long samples of acyclic sounds, or various representations inbetween. The standard method of...


sound isolation

Started by jrsmith5601 in comp.dsp11 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


"Comb notch" filters missing a tooth

Started by Rune Allnor in comp.dsp15 years ago 6 replies

Hi all. I have just "made" some recordings of birds nearby (which is to say that I ripped them off a CD released by the local ornithology...

Hi all. I have just "made" some recordings of birds nearby (which is to say that I ripped them off a CD released by the local ornithology society, but don't tell anyone) and want to play with these sounds to make an audio DSP demo. Among the birds are the "Eagle Owl" (Bubo Bubo) and a woodpecker. Now, the owl makes a very distinctive sound that shows up qiute well in a spectrogram (...


Simply FIR question

Started by ?ine Canby in comp.dsp14 years ago 7 replies

Hi there, I have a 1024 coef FIR filter bank, which I use to filter a cosine signal. I have calculated the stop-band supression to be -35dBs...

Hi there, I have a 1024 coef FIR filter bank, which I use to filter a cosine signal. I have calculated the stop-band supression to be -35dBs but this sounds really high to me. The filters turning point is at 0.1f, where f is the sampling frequency. For example, if I feed the FIR with a frequency of 0.25f, I get a signal out with amplitude 1*10^-6. Does this sound correct? Is there a fu...