The Digitorc 4 from Sonifex is a PCIe (Express) card that provides 4 independent transformer-coupled stereo channels of AES3 digital audio input or output via 25-pin D-Sub connector to a Windows platform. Especially useful for audio workstations, automation systems, audio logging, and multichannel playout, the card is fully compatible with the Wave, DirectSound, DirectShow, MCI, and Core Audio APIs.
The Digitorc 4 features both a single-lane bus-master PCIe interface and four 24-bit AES-3 codecs. Independent asynchronous sampling rate conversion on the inputs supports rates from 32 kHz to 96 kHz, while the output rate can be configured as 96, 88.2, 48, 44.1, or 32 kHz, either free-running or locked to an AES3 or AES11 reference on any of the inputs. When used with an internet time standard (e.g.ntp.org), a very precise sampling rate can be achieved. When the application rate does not match the hardware rate, Windows automatically inserts the software sampling rate conversion, ensuring that files of any sample rate can be played. Extended software bit depths of 32 and 24 bits are supported as well as 16 and 8 bits for playback and recording.
- 4 independent transformer-coupled AES-3 inputs and outputs
- 24-bit audio resolution
- Sampling rates up to 96 kHz
- Asynchronous sampling rate converters on each input
- Card synchronisation to any input or NTP-locked system clock
- 32- and 64-bit drivers for Windows XP and Windows7/8/10
- WDM-compliant supporting Wave, DirectSound, DirectShow, and Core Audio APIs
- The playback topology consists of a master output level, mute control and peak meter, a wave level and mute control, and input monitor level and mute controls for each ofthe line inputs.
- The record topology consists of a master input level, mute control and peak meter, line input level controls for each of the physical inputs, and a digital loopback level control and mute.
- The range on the input and output master controls is -96 to +6 dB, while the individual line controls range from -96 to 0 dB.
- The mixer functions allow inputs to be mixed back into each output, while a digital loopback is available from each playback channel into its corresponding record channel.
- High quality electrostatically shielded transformers are used on all the inputs and outputs to give superb performance.