WaveIO: a soundcard interface for LabView
Input data do not match Format
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- My old LabView program is no longer working with the new WaveIO version
- ASIO: Signal amplitudes are strange
Input data do not match Format The WaveIO_play VI will return this error if the number of samples in the data array does not match the sound format specified when the device was opened. If this error shows up, please check, that you provide sufficient values Multidimensional array with a total size of number of samples per channel times the number of channels. My old LabView program is no longer working with the new WaveIO version Some VIs have a slightly changed interfaces, so you have to re-link for example the WaveIO_Open VI to the new version in WaveIO.llb. This is due to new options, like WASAPI access. WASPI: Invalid Format Record (WASPI) and Play (WASAPI) in exclusive mode requires a format, which is supported by the device/driver. The supported formats are listed in the device properties control panel. E.g. most microphones are mono (single channel. If you try to open a stereo format stream, this will fail. ASIO: Signal amplitudes are strange The ASIO part of Waveio uses internally only bit integer data. The actual data format of the device is automatically detected. bit integer data have to be provided for output. ASIO: Second device cannot be opened The ASIO API does not allow to open multiple ASIO devices. So, first close the open device before opening another one. This is a shortcoming of the ASIO API and not under the control of the author of this program. C. Zeitnitz – May 2017 9 Copyrights 1. All rights of the WaveIO package lie with Christian Zeitnitz 2. ASIO is a trademark and software of Steinberg Media Technologies GmbH 3. The ASIO interface has been developed with the help of the SDK provided by Steinberg Media Technologies GmbH, Hamburg, Germany Document Outline
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