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Grass Valley Densité Audio Processing

Densité Modules for a Variety of Audio Processing Tasks
AAP-1741 4 channel analog audio processor
ADC-1722 Dual analog audio to AES converter
DAC-1721 Dual AES to analog audio converter
DAP-1781 8 channel digital audio processor
EAP-3101 SD embedded audio and Metadata processor
EAP-3901 3Gbps/HD/SD embedded audio and Metadata processor
UAP-1783 8 channel universal audio processor
Automatic Loudness Control (ALC) Advanced Loudness Control Solutions Which Prevent Excessive Audio Jumps
Audio processing sub-modules Optional Audio Processing for Densité Cards

The AAP-1741 is a high quality, 24-bit analog audio processor that can process up to 4 analog channels. It can be used as a standalone audio processor for discrete audio signals or it can be combined with a wide range of SD & HD video cards. When working in conjunction with a video card, the AAP-1741 can be used for dynamic processing, up or downmixing, and/or to embed audio into the video signal. Two audio processing cards can be combined together to process more discreet audio channels. When combining two cards together, all of the audio processing is synchronous and kept in phase ensuring proper alignment and matched delay. A ribbon connector carrying audio, timing signals and Metadata links the card(s).

The ADC-1722 is a high quality, 24-bit, analog to digital audio converter which allows conversion of 2 stereo analog audio channel into 2 AES type digital signals. Sampling rates can be set to 32, 48 or 96 kHz by an internal clock or an external reference signal. An internal digital EBU tone generator facilitates alignment of audio levels. User-defined channel identification data may be encoded in the AES status bits. An input audio signal status is also available indicating input signal silence or overload. The ADC-1722 is compatible with both AES3 and AES-3id digital audio standards.

The DAC-1721 is high-quality, 24-bit, digital to analog audio converter which allows conversion of 2 AES digital signal into to 2 stereo analog audio signals. The DAC-1721 is a dual input converter card. The input sampling rates can be up to 100 kHz, including 32 kHz, 44.1 kHz, 48 kHz and 96 kHz. An internal digital EBU tone generator facilitates alignment of audio levels. All analog audio output levels may be set individually. A digital 50/15 µs de-emphasis stage may be selected manually or automatically according to the channel status. Input status is also available indicating input audio signal presence or overload. The DAC-1721 is compatible with both AES3 and AES-3id digital audio standards.

The DAP-1781 is a high quality, 8 channel (4 AES) digital audio processor which performs signal processing and synchronizing, as well as Dolby E and Dolby Digital (AC-3) encoding and decoding with Metadata support. It can be used as a standalone audio processor for discrete audio signals, or it can be combined with a wide range of SD and HD video processor modules. When working with a video processor, the DAP-1781 can be used for dynamic processing, up/downmixing, and embedding of discreet audio channels into a video signal. It can also process Dolby E and Dolby Digital (AC-3) signals for encoding or decoding (ABUS).

The EAP-3101 is an advanced embedded audio processor which can simultaneously process up to 32 channels of audio (16 channels of embedded audio from the video plus others generated internally). Functions include down-mixing, Proc Amp, channel shuffling and mixing. Options include Automatic Loudness Control, dynamic processing (limiter, compressor, and expander) and loudness measurement. The EAP-3101 generates audio/video fingerprints (via an iControl option ) to detect and measure lip sync errors in a broadcast facility.

The EAP-3901 is an advanced embedded audio processor which can simultaneously process up to 32 channels of audio (16 channels of embedded audio from the video plus others generated internally). Functions include down-mixing, Proc Amp, channel shuffling and mixing. Options include Automatic Loudness Control, dynamic processing (limiter, compressor, and expander) and loudness measurement. The EAP-3901 generates audio/video fingerprints (via an iControl option) to detect and measure lip sync errors in a broadcast facility.

The UAP-1783 is a high quality, 24 bit universal audio processor that can process up to 8 discrete channels of audio. Inputs comprise Mono/2 Stereo analog channels as well as 2 AES. Outputs are analog (4 Mono/2 Stereo) and 2 AES. The actual I/O combination depends on the rear panel installed.

Excessive loudness variation is probably the most common viewer complaint, and it's now something you can eliminate entirely. Our Automatic Loudness Control solutions for our Densité interfaces are designed to address all typical loudness problems, including audio jumps between programs and commercials, without adversely impacting the program content.

Miranda offers additional audio processing power through the use of Optional Sub-modules that mount on compatible cards. Dolby Digital (AC-3) and Dolby E encoding/decoding, Automatic Loudness Control (ALC), and upmixing can be added for optimal integration of system components while reducing both power and rack space. These audio processors can be easily installed after initial commissioning, reducing initial roll-out costs. Compatible products can host up to two expansion sub-modules adding complex audio processing functions to existing capabilities.