voice

I have a .mp3 file. How can I seperate the human voice from the rest of the sound in C?

Is it even possible in C [I know it is possible in general -GOM player does it]? just let me get started... What do you say? How exactly do you identify human voice distinguished from other sounds? ...

Fundamental Frequency + Voice Detection in c#

I'm trying to detect voice throught input from the microphone in real-time. I allready receive the input, execute FFT algorithm and have the result in dB. I have a frequency domain, a time domain and a spectogram. How can I get the fundamental frequency? If I get the fundamental frequency can I specify that if the frequency is between ...

How do Mel Frequency Cepstrum Coefficients work?

I allready have FFT and pitch + absolute frequency calculated in real-time from input of microphone. Now I want to calculate the timbre. I saw Mel Frequency Cepstrum Coefficients - MFCCs but I didn't understand it very well. Can someone give me some tips on this.. ...

Mel Frequency Cepstrum Coefficients algorithm

I want to get the timbre of some audio. To use that I will make the Mel Frequency Cepstrum Coefficients algorithm. The implementation looks simples (I allready made step 1): 1. Take the Fourier transform of (a windowed excerpt of) a signal. 2. Map the powers of the spectrum obtained above onto the mel scale, using triangular overla...

Is it possible to write an iPhone app which can be active while the person is making a call, and "talk" to the person on the other end?

For instance, the app could say something like, "Please wait." or "I'll be right back". A friend asked me if it was possible, and since I don't have an iPhone I couldn't answer the question. Thanks. ...

How do we calculate the filters in Mel-Frequency Cepstrum Coefficients Algorithm?

After calculating the FFT and with the frequency we need to do something like this: http://instruct1.cit.cornell.edu/courses/ece576/FinalProjects/f2008/pae26%5Fjsc59/pae26%5Fjsc59/images/melfilt.png We filter the frequency spectrum with those triangles. I saw that we can use distint ways to calculcate the triangles. I will make the size...

How to make MFCC algorithm?

I wanna make the Mel-Frequency Cepstrum Algorithm but there are some things that I don't understand. After FTT is done we need to "Map the powers of the spectrum obtained above onto the mel scale, using triangular overlapping windows." I know how to calculate the triangles and I also know how to pass to mel scale. I simply don't know w...

When calculating the fast fourier tranform..?

If we get the sound from microphone with two channels, to calculate the frequency spectrum we: calculate the fast fourier transform of all the data input? calculate the fast fourier transform of each left and right channel and then make a average of both? calculate the fast fourier transform of each left and right channel and get the b...

Intelligent Voice Recording: Request for Ideas

Say you have a conference room and meetings take place at arbitrary impromptu times. You would like to keep an audio record of all meetings. In order to make it as easy to use as possible, no action would be required on the part of meeting attenders, they just know that when they have a meeting in a specific room they will have a recor...

realistic free TTS program

I have tried Festival, espeak, and MBROLA, but the voices are mediocre at best, and no where near as realistic as current commercial systems. For example this demo: http://www.acapela-group.com/text-to-speech-interactive-demo.html What is the most realistic free TTS voice you have tried? ...

How can I implement voice chat in PHP based website?

Any suggestions for simple voice chat solution for a PHP based website. We already have a text chat in place, client now wants voice chat too. ...

IVR development

Hi, I need to build an IVR application (possibly 10 Phone lines). I am entirely new to this domain and am familiar with some concepts, Can someone please provide me with some links/advice on how I can go about building the IVR system? Also, I need to know the exact process, whats involved, if I need to rent phone lines? etc., If I wa...

How to implement a voice chat functionality using Python?

Hi guys! My goal is a cross-platform voice chat application. The part I am a bit confused about it's the voice transferring one : ) What can you suggest? Maybe a binding to some low-level library or even a framework? BTW, I don't have to use Python, so if you think that Python is not a good idea for this purpose, please show me the tr...

voice enabled-keyboard

hii all :D i'm dying to see the source code for the voice enabled-keyboard feature for android :\ i'm new to open source developing yet i'm very interested in this application particularly can someone tell me where to find the code ... please :) Thanx in advance ... ...

How to make phone calls using Python?

I'm writting a small python program to send voice file to other telephone. The phone is connected to pc over usb. How to make phone calls using Python? ...

Analyze "whistle" sound for pitch/note

Hello everyone I am trying to build a system that will be able to process a record of someone whistling and output notes. Can anyone recommend an open-source platform which I can use as the base for the note/pitch recognition and analysis of wave files ? Thanks in advance ...

I'm trying to program a unique app, and use voice command to trigger specific functions within the app

If anyone can help me with this, I'd be eternally in their debt. Without getting bogged down in details, I'm trying to program an app so that, for instance, while the application is currently launched, if I say the words, "activate function A", a specific function which already exists in my app, is activated. Have I explained myself ...

Is it possible to encrypt/decrypt voice calls in Android?

I want to know if I can create an application in android that encrypts your voice in a normal phone call and sends it to the destination where it can then be decrypted... ...

ZyXEL ADPCM codec

I have a ZyXEL USB Omni56K Duo modem and want to send and receive voice streams on it, but to reach adequate quality I probably need to implement some "ZyXEL ADPCM" encoding because plain PCM provides too small sampling rate to transmit even medium quality voice, and it doesn't work through USB either (probably because even this bitrate ...

Is there a flash based web client with both group instant message and voice capabilities that I can modify?

I am looking for a flash based web client with both group instant message and voice capabilities that I can modify. Does anyone know of any open source or proprietary solutions? ...