Sonifex Show New Profanity Delay at SBES 2007
14th November 2007
On SBES stand number 5, Sonifex are showing the RB-PD2 stereo audio profanity delay for the first time. Profanity delays are used by many radio stations to put the main program in a few seconds of delay so that swearing and profanities can be cut out of the broadcast before going to air.
The Redbox RB-PD2 will be available in February 2008 and is a 1U 19” rack-mount which features an automatic audio stretch algorithm that allows between 2 and 64 seconds of delay to be built up live whilst “on air”, whilst maintaining the correct pitch. The delay can also be acquired whilst playing a pre-selected audio file on a Compact Flash™ memory card. When the program is complete, the audio stretch algorithm seamlessly reduces the delay to zero.
The RB-PD2 has both balanced analogue and AES/EBU digital audio inputs and outputs on 3 pin XLR connectors and provides sample rates up to 48kHz at 24 bit. It can act as a combined A/D and D/A unit meaning that analogue inputs can be output as AES/EBU or vice-versa.
The delay can be initiated by pressing the BUILD DELAY button on the front panel. A front panel display shows the amount of delay being built-up, up to the amount initially selected. There are several ways to make sure that any unwanted material is removed from the audio at the outputs. A COUGH function, activated from a dedicated front panel button, allows locally generated sounds being presented at the inputs, such as the presenter coughing or equipment switching noises, to be discarded.
The DUMP function, which is also activated from a front panel button, has 2 different modes. The first DUMP mode removes a section of audio that has already been buffered, by a pre-selected amount. The second DUMP mode plays a pre-selected audio file on the Compact Flash™ memory card. When the file has finished playing, the delay is then equal to the duration of the file. The DUMP button can be used multiple times to use up the built-up delay and once used, the unit automatically starts to rebuild the original delay time.
As a last resort, all the buffered audio can be discarded by pressing and holding the DUMP button which activates the DROP function. At the end of a radio show when you want to broadcast live, the delay can be ramped down by pressing the front panel EXIT DELAY button.
A dedicated record mode allows audio presented at either the analogue or digital inputs to be recorded to a linear WAV file on a Compact Flash™ memory card. Additionally, the card format used is PC readable, allowing pre-recorded linear WAV files to be transferred easily from a PC or other such device.
The RB-PD2 features a remote port supplying 8 inputs and 6 outputs, all of which are freely assignable. The inputs can be used to trigger any of the unit’s functions such as build delay, activate cough or enter record mode and start a new recording. The outputs can provide external signalling to indicate when certain events have occurred such as the delay reaching the required value or the outputs are muted. Because playback from a Compact Flash™ card can be triggered remotely, the RB-PD2 can also be used at transmitter sites to play an emergency audio file via GPI in the event of silence detection.
The new RB-SC2 dual sample rate converter (192kHz) is also being shown. It has AES/EBU, S/PDIF and TOSlink optical level digital audio inputs and outputs. It has 2 independent SRC circuits and can function as a full bi-directional sample rate converter. It also has 2 optional video synchronising boards, either analogue or HD/SD-SDI digital.
The recently released RB-OA3 unity gain on-air switcher, capable of switching four stereo pairs between three studios, has been augmented by the new RB-OA3R remote switch panel which has Offer, Accept, Delay and Dump buttons for use in studios connected to an RB-OA3. Using RB-OA3R units connected to a central RB-OA3, the main on-air broadcast can be switched between studios and the remote panel can also control a profanity delay unit.
These new products will be displayed with the full range of Redbox digital audio converters, word-clock, audio and headphone distribution amplifiers, microphone amplifiers, matching amplifiers, mixers, source select units, silence detect unit, limiters, a power controller and stereo to mono converters. In addition, the ProAVM range of audio interfaces will be on show.
Also showing is the DHY-03 digital telephone hybrid. Probably the best performing telephone hybrid in the world with a 75dB null, universal line compatibility, input/output gain adjustment & metering, conferencing, RS232 control, local/remote line hold switching and auto-answer. A new eurocard sized version of this product, the DHY-03EC, has also been released.
The S2 hybrid analogue/digital radio broadcast mixer will be mounted in S2 Solutions technical radio studio furniture and Sonifex Talkback Intercoms will be shown in use with this set-up too. Finally, the V2.0 of the D:Scribe transcription software will be demonstrated with the Net-Log audio logger which records 4 channels of audio to an internal hard-disk for playback across a network.
Being the official UK distributor of CCS Musicam codecs, Sonifex are also showing the CCS Prima LT industry workhorse audio codec, offering full stereo audio bandwidth, MPEGL2, MPEGL3, G.722 coding standards, ISDN and X21 line interfaces, data rates from 64 - 384 kb/s and full programmability through the Prima Logic Language.
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UK and other export enquiries :
contact Eamonn Heffernan of Sonifex Ltd, tel : +44 1933 650 700 fax : +44 1933 650 726
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