31/07/2015-11:29:46
RE: Petites Onken: optimisation du filtre
J'ai extrait ceci du manuel REW. Il y a des informations très intéressantes pour Mac OS. Il faut que tu essayes le freeare qu'il recommande, cela va t'aider à bien configurer les entrées et sorties :
"Choosing the Audio Input and Output
REW defaults to using the audio input and output which have been set as the defaults in your OS. If you wish to use other audio inputs or outputs they can be selected in the Soundcard Preferences panel, click the Preferences button in the toolbar to display the panel. The device lists show all soundcards that REW has detected, when a soundcard has been selected the input and output lists show the available inputs/outputs on that soundcard. Note that if a USB soundcard is plugged in after REW has been started it may take up to 1 minute for it to appear in the list of devices - this is a feature of the Java Runtime Environment.
The lists include both internal and external devices and default drivers offered by the operating system.
Where possible, select the soundcard itself rather than the OS drivers "Primary Sound Capture Driver", "Primary Sound Driver", "Java Sound Audio Engine" or similar. REW needs direct access to the controls on the soundcard if it is to automatically adjust levels, this may not be possible if the OS drivers are selected. Java Sound Audio Engine is also prone to pops and clicks during playback whch degrade measurements.
Under OS X the free M3D Output Mixer from www.mandolane.co.uk. is highly recommended, after installation select M3DMixer as the output device.
Once the devices have been chosen, the input and output can be selected. Typically the input will be called "LINE_IN" and the output will be "SPEAKER" or "LINE_OUT", however these names may be different for USB soundcards - for example, the input may be labelled "Digital Audio Interface".
Trouble-shooting tip: To prevent REW from accessing soundcard controls, leave the input and output devices set to "Default Device". The actual input and output used and any level control settings will then need to be made using the OS volume controls and/or the soundcard's mixer.
Note that on a Mac it may be necessary to set the Sample Rate to 44.1k to access audio inputs and
outputs. There is no programmatic access to soundcard controls on the Mac, use the controls in Applications - Utilities - Audio Midi Setup.
"
"Choosing the Audio Input and Output
REW defaults to using the audio input and output which have been set as the defaults in your OS. If you wish to use other audio inputs or outputs they can be selected in the Soundcard Preferences panel, click the Preferences button in the toolbar to display the panel. The device lists show all soundcards that REW has detected, when a soundcard has been selected the input and output lists show the available inputs/outputs on that soundcard. Note that if a USB soundcard is plugged in after REW has been started it may take up to 1 minute for it to appear in the list of devices - this is a feature of the Java Runtime Environment.
The lists include both internal and external devices and default drivers offered by the operating system.
Where possible, select the soundcard itself rather than the OS drivers "Primary Sound Capture Driver", "Primary Sound Driver", "Java Sound Audio Engine" or similar. REW needs direct access to the controls on the soundcard if it is to automatically adjust levels, this may not be possible if the OS drivers are selected. Java Sound Audio Engine is also prone to pops and clicks during playback whch degrade measurements.
Under OS X the free M3D Output Mixer from www.mandolane.co.uk. is highly recommended, after installation select M3DMixer as the output device.
Once the devices have been chosen, the input and output can be selected. Typically the input will be called "LINE_IN" and the output will be "SPEAKER" or "LINE_OUT", however these names may be different for USB soundcards - for example, the input may be labelled "Digital Audio Interface".
Trouble-shooting tip: To prevent REW from accessing soundcard controls, leave the input and output devices set to "Default Device". The actual input and output used and any level control settings will then need to be made using the OS volume controls and/or the soundcard's mixer.
Note that on a Mac it may be necessary to set the Sample Rate to 44.1k to access audio inputs and
outputs. There is no programmatic access to soundcard controls on the Mac, use the controls in Applications - Utilities - Audio Midi Setup.
"