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The ASIO Audio section in the Global category from the Configuration tab allows setting up connected a ASIO sound card for Pandoras Box. ASIO sound cards are used by dedicated Audio tracks in PB Manager software or (since version 5.1) in PB Player / Server running as Client or Master. Audio tracks allow playing back ASIO wav files while being synchronized to a master clock.
If you are interested in sound cards available for Pandoras Box, please check the chapter "Input and Output Cards".
Choose with the "Site" drop-down menu a Pandoras Box system, and assign an available ASIO device with the "Device" drop-down. Decide by ticking the check box "Use Audio Clock as Master" whether this system should send the master clock. Please note, that there can be only ONE Master in the system! The ASIO clock will be the system’s master clock and all video layers on all Clients within the entire PB network will be synched to it.
It is possible to output ASIO on multiple systems but it is not possible to synchronize the audio on more than one system while playing back. If you output ASIO on another system (than the one that generates the master clock), THEIR audio tracks cannot be synched while playing back. They will be triggered in synch but as soon they are running they are in a free-run mode.
Please note: The ASIO clock will be the system’s Timecode master. It is not possible to have two master clocks in a system; ASIO and SMPTE can’t be used simultaneously.
With a selected ASIO device, you can choose the option "Play Audio Files in Parallel with Playlist Entries". This automatically plays the "according" audio file with the video in a Playlist. The audio file does not need to be part of the project, but it has to be named in the same way as the video file and needs to be located in the same folder. If you like to play the files an another ASIO channel than 1, change the "Default Output Channel Number" to a channel listed under "Show Channel Details".
Choose a sample rate from the "Sample Rate" drop-down list (41 kHz, 44.1, 48 kHz, 96 kHz as supported by the sound card). All sound files within the project should be created as wave files with the same sample rate.
Please note that the ASIO Tracks will play mono and stereo PCM Wave files (16 or 24 bit) with the sample rate that is preset in the Audio Configuration only, there is no sample rate conversion. Each sample will be played back 1:1.
There are test files with various sample rates and volumes in the Stock Assets folder.
This feature is of interest if the computer that runs the Master has no dedicated ASIO sound card or driver installed but offers a Windows audio device. In previous versions this hardware setup allowed only to play audio (containing) files on a Video Layer but not from an ASIO Track. Now you can choose to play all audio with the audio device that is setup as the standard audio device in the Sound card settings of Windows. Please also check the sample rate (e.g. 48 or 96kHz) and bit depth (16bit) there, mostly available in the advanced properties tab.
Then simply activate the check box "Use Windows audio for preview" in Pandoras Box and you can preview and listen to your programming of the local or remote node. When using Windows Audio all ASIO channels are mixed down to two channels, all odd ones to the left channel and the even ones to the right channel.
Please also note that a normal sound card does not synchronize audio information in the same way as an ASIO interface. Hence, the option "Use Audio Clock as Master" is not available. For audio playback during a show, an ASIO interface is recommended.
The fader sets the master volume of your ASIO sound card. Value Range: -96 dB (muted) up to 6 dB (max.). Default value is -9 dB.
The ASIO protocol allows multichannel audio output, depending on the sound card up to 64 audio channels are supported. In order to assign a track to a specific audio channel of your ASIO sound card, please refer to the Track Inspector.
Show Channel Details:
This list reads the sound cards settings and gives you an overview how the channels are routed in the sound card.