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Home | Processors | Bit | bit One.1

bit One.1 DSP | 8 input channels | 8 output channels | 24 bit / 48 kHz floating point processing

Despite its compact size, the bit One is equipped with a powerful 266 MHz / 32 bit floating point DSP microprocessor, working in real time on all the functions of the most complete systems. Managed and configured by a simple and intuitive computer software, it is possible to make adjustments to improve the signal through each phase of its path; from input to output.Eight input channels for four different signal typologies (amplified, pre-amplified, coaxial electric and TOSLINK optical digital) and six different sources managed through a remote control, making the bit One a unique interface suitable for any need.Eight analog and/or digital output channels ensure a wide expandability for any audio system configuration.

Amplifier Tech Data

Nominal power supply voltage / Fuse 11 ÷ 15 VDC
Channels 8
Sample Rate 24 bit / 48 kHz
Hi Level Inputs 8
Low Level Inputs 8
Digital Inputs 2
Processing Method Floating point
Idling current 0.45 A
Switched off without DRC MP < 0.5 mA
Switched off with DRC MP < 1.8 mA
Remote IN 7 ÷ 15 VDC (1.3 mA)
Remote OUT 12 VDC (130 mA)

Signal Stage

Distortion - THD @ 1 kHz, 1 VRMS Output 0.002 %
Bandwidth @ -3 dB 4.5 ÷ 21k Hz
S/N ratio @ A weighted, 4 V Output, 2 V AUX input 102 dBA
Channel Separation @ 1 kHz 77 dB
Max Output Level 0.1% THD 4 V RMS

Input Stage

Low level (Pre) Ch 1 ÷ Ch 6, AUX1 L/R, AUX2 L/R
High Level (Speaker In) Ch 1 ÷ Ch 8, Phone In

Crossover

Filter type Selectable; Hi-pass, Lo-pass, Bandpass, Full Range
Filter mode and slope Full / Hi-Pass / Low Pass / Band Pass

Time Alignment

Delay 0 ÷ 22 ms in 0,02 ms steps (748 cm / 294.5 in.)

General Requirements

PC connections USB /B (2.0)
PC OS Windows (Win 2000, XP, Vista, 7)
Video Resolution with screen resize 1024 x 768 px min.

Box Content

DRC
DRC
Digital Remote Control permits the control of the main system without the use of a PC. Installed in an ergonomic position within the dashboard of the car, the user can: choose between two tuning configurations pre-sets created and saved using the bit software; select the source from the master, auxiliary and optical digital inputs; adjust main system functions (volume, balance, fader and subwoofer volume); identify the proper position of the sources output level set while tuning the bit processor as well as adjust the display brightness and to reduce glare during night driving.
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Accessories

DRC MP
DRC MP
The new Audison DRC MP (Digital Remote Control Multimedia Play) is compatible with all the Audison electronics featuring AC Link bus. Its slim profile along with the holder supplied with it eases the installation in the best position inside the car. Thanks to the new Joystick, Rubber Touch finished for best control of the movements along the four direction axes, the DRC Settings menu can be adjusted and navigation is also possible through the Navi Comm and function if the system features an Audison bit Play HD with video output connected to a monitor.
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SFC
SFC
SFC provides a solution to the issues related to digital interfacing like in the case of the Digital head-unit having a higher sampling frequency (96/192 kHz) than the receiver that can not handle frequencies higher than 48 kHz.
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C2O
C2O
The C2O interface converts the signals coming from the coaxial digital input and from the analog AUX-IN into a TOSLINK optical digital output signal (up to 24 bit/192kHz). The conversion allows the integration of the new Hi-Res portable devices equipped with coaxial digital output (75 ohm) and smartphones with analog output on 3.5 mm mini Jack (also 4 poles) with Audison processors featuring an optical digital input compatible with the resolution of the signal sent to the C20. Thanks to its extreme compactness, the C20 can be installed in a hidden position on the dashboard, drastically reducing the length of the cabling between the portable player and the receiving device.
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ES3
ES3
It prevents the processor from shutting down when turning on vehicles featuring the start & stop system. When starting the engine, the vehicle battery voltage might decrease below 8 Volts value. If a signal processor (bit One, bit Ten) is installed in your system, especially with vehicles featuring the start & stop system, low supply voltage values might make the processor shut down. In order to avoid waiting for the processor to complete its turn-on cycle again, you can install the ES3 by connecting it in series to the processor power supply cables.
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bit DMI
bit DMI
bit DMI is a digital interface for MOST systems, providing the ability to connect the Audison bit processors and the Audison amplifiers, equipped with digital input, to OEM multimedia systems in cars featuring the MOST technology based on optical fibre. Thanks to the digital connection, the signal can be transmitted without loss of quality, keeping the audio controls built in the OEM head unit “ such as volume, balance and tone controls as well as the hands-free kit, navigation system and parking sensors alerts unaltered.
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bit Tune
bit Tune
The Audison bit Tune is a revolutionary system of automatic calibration for Audison bit processors developed with bit Drive technology. Bit Tune also includes a multitude of additional features for electro-acoustic verification and analysis of any car audio system.The Audison team s goal in developing the bit Tune was to speed up the setting of basic parameters for the calibration of the bit processors (time alignment, equalization, levels, etc.), ensuring an excellent level of acoustic performance. This phase also includes the diagnosis of comm on errors (channel inversion/phase, no signal on one channel/cable, etc.) to set the specialist free from his routine work and allow him to focus on the art of fine-tuning. Only personal interpretation and experience can achieve what a machine could never do: create Your Sound!
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SPM4
SPM4
Stereo passive mixer (unpowered) featuring 4 input channels and 2 output channels, designed for active OEM multi-way systems where each speaker is powered by one specific amplified channel. SPM4 mixes audio through 4 audio transformers specifically developed to achieve very low distortion and highly linear acoustic response. SPM4 provides the ability to mix the midrange/woofer and tweeter channels coming from the amplifier and supply one single mid-high channel. The Ch1(L/R) channels feature two inputs, one features an inverting input compared to Ch2 (L/R) channels; the mixing process often gives better results when one of the two channels undergoes a 180° dephasing. SPM4 is especially recomm ended to extend the number of inputs of the Audison digital processors or amplifiers with built-in DSP because they feature a De-equalizer (De-Eq). In that case, any possible non-linear acoustic emissions due to the mixing of the pre-existing filtered channels are duly compensated.
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USS4
USS4
Some OEM sources/head-units have a test circuit that monitors the presence of a low-impedance load to enable audio outputs. When you connect this type of head-unit to the high-level inputs of an Audison bit processor, which has a high impedance load, audio outputs are silenced. By inserting the USS 4 between the source and the processor / amplifier, these problems are definitively solved.
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STR
STR
Male-Female Toslink adapter with rotating head. 90° angle shape to save space.
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ECK DRC
ECK DRC
It is a kit composed of a cable and an adapter allowing a 2 m / 78.74 in. Additional extension of the cable supplied with the DRC. This extension is required for installations on especially long vehicles such as SUV. Total length of the supplied cable with the extension is equal to 6,5 m / 225.90 in.
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Features

  • Audio DSP and converters
    32-BIT floating point Analog Devices Sharc (Clock speed: 266MHz) Digital Signal Processing
    chip and Wolfson A/D D/A converters working in PCM at 48kHz with 24 Bit resolution.
  • Tuning functions can be heard in real time due to processing speed.
  • Audio Inputs
    8 independent high-level channels (with automatic summing capability) or 6 independent
    analog low-level channels;
    2 analog low-level stereo auxiliary inputs;
    1 optical digital input;
    1 electric coaxial digital input;
    1 high-level momentary audio interrupt input (with Mute IN) for use with mobile phone or
    navigation systems.
  • Audio Outputs
    8 independent low-level analog channels featuring adjustable level and 1 AD Link output
    (8 independent digital audio channels through a single CAT 5.S LAN cable for use with AD Link
    provided amplifiers).
    Digital Control System
    1 USB /B (2.0) connector for PC connection;
    2 AC Link control bus connectors for DRC and AC Link amplifiers.
  • Configuration
    Guided procedure that, thanks to a wide range of set names, provides the ability to assign
    each component to the bit One connections and automatically coordinate their functioning.
  • Turn-on Controls
    ART automatic remote turn on/off circuit;
    Through the car ignition key with memory function;
    Through the DRC;
    Automatically through the hands-free phone kit.
  • In/Out Volume
    Input sensitivity automatically adjusted for the main inputs (with supplied Test CD and DVD);
    Manual input sensitivity adjustment for auxiliary inputs;
    Independent level control for each output channel for system fine tuning (-40 ÷ 0 dB).
  • Dynamic Equalizer
    System automatically self-adjusts through an equalization between low and high listening
    levels that can be set by the user and controlled by the DRC.
  • De-equalization and calibration
    Automatic de-equalization of signal fed into the high-level inputs (with supplied Test CD or
    DVD) and levels calibration.
  • Equalizers
    One 31-band graphic equalizer (1/3Oct.; ±12dB) for each one of the 4 auxiliary input;
    One 31-band graphic equalizer (1/3 Oct.; ±12dB) for each one of the 8 output channels.
  • Crossover Filter
    Filter typology: Selectable; Hi-pass, Lo-pass, Bandpass, Full Range;
    Cut-off frequency: 70 steps available from 10 Hz to 20 kHz;
    Cut-off slope: Selectable; 6 to 48 dB/Oct.;
    Alignments: Selectable; Linkwitz or Butterworth;
    Mute: Selectable for each output (On/Off);
    Phase: Selectable for each output (0°/180°).
  • Signal channels reconstruction
    It can reconstruct a stereo signal from a multi-channel signal. In addition it can reconstruct a
    centre channel and subwoofer channels from a stereo input alone.
  • Time Alignment
    Guided procedure for the speaker distance data entry with an automated calculation of proper
    delay times for each channel for accurate time alignment set-up.
  • System also provides for
    manual fine tuning of delay (0 ÷ 22 ms max).
    Auto Restart
    Automatic turn Off/On, if the DSP locks up.
  • DRC Master Volume control, Subwoofer Volume control, Balance control, Fader control, Input
    selection, Memory selection, Dynamic Equalizer On/Off, Adjustable display brightness, Access
    to digital features of Audison TH amps if connected.
  • Memory
    4 presets separately managed and recalled by the DRC Remote Control.
    Bit One software
    Windows (Win 2000, XP, Vista, 7) based software with “Standard” and “Expert” operating modes;
    Screen resolution: 1024 x 768 px min. 

Technologies

ECK DRC
ANALOG DEVICE SHARC™ DSP

Analog Device SHARC™ series chip with floating point precision, to reach the highest audio quality.

ECK DRC
BIT DRIVE

Auto tuning by Audison bit Tune and communication with bit Drive portal.

ECK DRC
DE-EQ

De-equalization function to “flatten” any equalization applied by default by OEM sources.

ECK DRC
Full DA

Pure digital signal transfer with a resolution up to 24 bit / 48 kHz

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