search for: m_waveformatex

...ibrary from Windows. I have posted my problem before but didn't get a solution. I am doing an VOIP project in which i am recording sound and streaming it to the peer. I wanted to encode and decode wav files that brought me to this site. I am recording sound in the following format:- m_WaveFormatEx.wFormatTag = WAVE_FORMAT_PCM; m_WaveFormatEx.nChannels = 1; m_WaveFormatEx.wBitsPerSample = 8; m_WaveFormatEx.cbSize = 0; m_WaveFormatEx.nSamplesPerSec = 8000; m_WaveFormatEx.nBlockAlign = 1; m_WaveFormatEx.nAvgBytesPerSec = 8000;...

...s speaking into the microphone. #define FRAME_SIZE 160 The application is coded in MFC C++. The record buffer is set to be the same as the FRAME_SIZE such that my callback function is called everytime 160 bytes of data is recorded. Here's what I did in the initialisation (called only once). m_waveFormatEx.wFormatTag =WAVE_FORMAT_PCM; m_waveFormatEx.nChannels =1; m_waveFormatEx.wBitsPerSample =8; m_waveFormatEx.cbSize =0; m_waveFormatEx.nSamplesPerSec = 8000; m_waveFormatEx.nBlockAlign =1; m_waveFormatEx.nAvgBytesPerSec = 8000; int quality =8; speex_bits_init(&bits); enc_state = speex_encoder_i...

...t> To: carineliang@yahoo.com.sg; speex-dev@xiph.org Sent: Thursday, 2 November 2006 2:04:39 PM Subject: RE: [Speex-dev] Integrating speex with VideoNet application: Constantbackground noise DIV { MARGIN:0px;} At first glance it looks like you are opening the output device in 8-bit mode (m_waveFormatEx.wBitsPerSample =8;). You will need to use 16-bit mode if you expect to write an array of signed short integers to the audio buffer. 8-bit PCM is an unsigned mode, no longer used much these days. Also, a good debugging trick is to include something like this in your output sample process...

...am recording sound and streaming it to the peer. I wanted to >encode and decode > wav files that brought me to this site. > > I am recording sound in the following format:- > > I don't know much about windows "Wave" stuff, but this doesn't look right: > m_WaveFormatEx.wFormatTag = WAVE_FORMAT_PCM; > m_WaveFormatEx.nChannels = 1; > m_WaveFormatEx.wBitsPerSample = 8; > m_WaveFormatEx.cbSize = 0; > m_WaveFormatEx.nSamplesPerSec = 8000; > m_WaveFormatEx.nBlockAlign = 1; > m_WaveFormatEx.nAvgBy...

...s speaking into the microphone. #define FRAME_SIZE 160 The application is coded in MFC C++. The record buffer is set to be the same as the FRAME_SIZE such that my callback function is called everytime 160 bytes of data is recorded. Here's what I did in the initialisation (called only once). m_waveFormatEx.wFormatTag =WAVE_FORMAT_PCM; m_waveFormatEx.nChannels =1; m_waveFormatEx.wBitsPerSample =8; m_waveFormatEx.cbSize =0; m_waveFormatEx.nSamplesPerSec = 8000; m_waveFormatEx.nBlockAlign =1; m_waveFormatEx.nAvgBytesPerSec = 8000; int quality =8; speex_bits_init(&bits); enc_state = speex_encoder_in...

Hi, I've changed the m_waveFormatEx.wBitsPerSample for both record buffer and playSound buffer, changed my array from char to short and I'm still getting the same constant background noise. I notice that when I talk into the mike, I will get a slightly louder noise, can't hear any clear speech... Any idea what's wrong? R...

...arineliang@yahoo.com.sg; speex-dev@xiph.org Sent: Thursday, 2 November 2006 2:04:39 PM Subject: RE: [Speex-dev] Integrating speex with VideoNet application: Constantbackground noise DIV { MARGIN:0px;} At first glance it looks like you are opening the output device in 8-bit mode (m_waveFormatEx.wBitsPerSample =8;). You will need to use 16-bit mode if you expect to write an array of signed short integers to the audio buffer.. 8-bit PCM is an unsigned mode, no longer used much these days. Also, a good debugging trick is to include something like this in your output sam...

...-----Original Message----- From: Carine Liang [mailto:carineliang@yahoo.com.sg] Sent: Sunday, November 05, 2006 4:51 PM To: John Miles; speex-dev@xiph.org Subject: Re: [Speex-dev] Integrating speex with VideoNet application: Constantbackground noise Hi, I've changed the m_waveFormatEx.wBitsPerSample for both record buffer and playSound buffer, changed my array from char to short and I'm still getting the same constant background noise. I notice that when I talk into the mike, I will get a slightly louder noise, can't hear any clear speech... Any idea what's...

...---Original Message----- From: Carine Liang [mailto:carineliang@yahoo.com.sg] Sent: Sunday, November 05, 2006 4:51 PM To: John Miles; speex-dev@xiph.org Subject: Re: [Speex-dev] Integrating speex with VideoNet application: Constantbackground noise Hi, I've changed the m_waveFormatEx.wBitsPerSample for both record buffer and playSound buffer, changed my array from char to short and I'm still getting the same constant background noise. I notice that when I talk into the mike, I will get a slightly louder noise, can't hear any clear speech... Any idea what's wrong?...