This example demonstrates:
1. How to use vcproWaveMixerX
component to mix audio stream from the sound card
(vcproWaveInDeviceX
component) with stream from WAV-file (vcproWaveRiffX
component).
2. How to use vcproWaveResamplerX
component to change PCM parameters of audio stream (sampling rate, bits
per sample and number of channels).
3. How to use GetDeviceCount and GetDeviceName methods of vcproWaveInDeviceX
/vcproWaveOutDeviceX
components to enumerate audio devices.
The chain of components we will build is (WaveIn, WaveRiff) => WaveMixer => WaveOut
(WaveIn and WaveRiff components are both providers for WaveMixer).
Please follow these steps:
1. Place WaveIn, WaveRiff, WaveMixer and WaveOut components on form.
2. Specify WAV file name you wish to playback by setting WaveRiff.FileName property.
3. Set WaveRiff.Loop property to True is you wish to loop WAV file playback.
4. Set WaveMixer.RealTime property to True.
5. Set links between components in chain by making WaveMixer to be a consumer of WaveIn and
WaveRiff components, and WaveOut a consumer of WaveMixer. Refer to Providers & Consumers section for details.
6. Activate WaveIn and WaveRiff components by setting Active property to True.
The chain of components we will build is WaveIn => WaveResampler => WaveOut
Please follow these steps:
1. Place WaveIn, WaveResampler and WaveOut components on form.
2. Set WaveResampler.DstSamplesPerSec property to 8000. This reduces quality of output stream from 44100 kHz to 8000
kHz.
3. Set WaveResampler.IsFormatProvider property to True. This will cause WaveResampler to assign its stream format
parameters to consumer (WaveOut).
4. Set links between components in a chain by making WaveResampler to be a consumer of WaveIn component, and waveOut a
consumer of WaveResampler. Refer to Providers & Consumers section for details.
5. Activate WaveIn component by setting Active property to True.