Continue Shopping View Cart
Markertek - The Future of Broadcast Supply

Call 800-522-2025
M-F 8:30am - 7pm EST

Free Shipping Promo Box

FREE SHIPPING No Minimum Order!

SHOP MARKERTEK EVERYDAY for all of your needs. Free shipping on almost every order placed on our website.
Special order & oversized freight intensive items ship at an additional cost. Continental US orders only.

Fast Economical International Shipping
Markertek makes it EASY for our international customers to get their orders!

At check-out you can view our very affordable international shipping rates that are ALL-INCLUSIVE with your GUARANTEED LANDED COST and NO SURPRISE FEES!

*Economy International Shipping delivery time is approximately 7-14 days. Economy International Shipping is available to select countries. Not all products are eligible.

Secure LoginClose X

Returning Markertek Customers

New Markertek Customers

Why Create an Account?

Creating a Markertek account now will save you time on future orders. You'll have full access to your order history and a personalized shopping experience.

Channel Talker CTD-8 Audio Tone Generator w/Voice ID 8-Channel AES/EBU

    Channel Talker CTD-8 Audio Tone Generator w/Voice ID 8-Channel AES/EBU


    Item #: VI-CTD8   •   MFG #: CTD-8


    This item is no longer available.
    Ask a Markertek Expert if you need assistance finding an appropriate substitute.



    Item unavailable. Please select another option.

    Items similar to the VI-CTD8


    The CTD-8 makes it possible for one person to setup or verify all the AES/EBU digital audio channels in his facility D easily, quickly, and accurately. The unit produces a hands-free audible and visual sequential voice ID for each channel, eliminating the need for external generators or extra personnel to switch between sources. In addition to the voice ID's, the CTD-8 includes AUX channel tones allowing both narrow and wide band frequency response testing, and for spectrum analyzers, a pink noise generator is included. Finally, there is a modified sine wave output that can be monitored at the audio system output to verify that there has not been an audio phase reversal in the system. Audio phasing or polarity can be verified either visually (oscilloscope or hand-held video scope) or with an approved polarity detector (CL-1 Channel Listener).

    • Features

      • - Audio Tone Generator With Voice ID
      • - Eight AES/EBU digital channels
      • - AUX channel with 4 specialty tones
      • - DAR input: Locks to house reference
      • - DAR output reference
      • - Perfect For Setting Up And Testing 8 Channel Studios And Digital Dolby 5.1
    • Specifications

      • 8 Tone Channels: Digitally generated, exactly -20dBFS, 1000 Hz tone with sequential voice markers on all 8 channels (four digital streams), 19-Bit resolution, and 24-bit compatible. Outputs are AES/EBU compatible (75 Ohm BNC).
      • AUX Channel: Digital stream output with 4 selectable tones: Step-6, Step-12, Pink Noise, and Polarity. Identical information is on both channels. Output is AES/EBU compatible (75 Ohm BNC).
      • Step-6: Six stepped tones: 125, 250, 500, 1000, 2000, and 4000Hz. Duration 500ms each continuously repeating. Output level exactly -20 dBFS with 19-bit resolution and 24-bit compatible.
      • Step-12: Twelve stepped tones: 12.5, 25, 50, 125, 250, 500, 1000, 2000, 4000, 8000, 12000, and 17000Hz. Duration 500ms each continuously repeating.Output level is exactly -20 dBFS with 19-bit resolution and 24-bit compatible.
      • PINK Noise: Digitally generated pink noise sequence. Output level is -20 dBFS average, 16-bit resolution, and 24-bit compatible. Repeat rate 1.365 sec.Polarity: 600Hz, exactly -20dBFS, digitally generated tone modified so that the negative half of every fourth sine wave is truncated to -50% for identification.
      • DAR Output: One Digital Audio Reference output (DAR). Audio output Left and Right = 0.00 volts (minus infinity db D dead silence). Class 1 reference signal.
      • DAR Input: Locks to external DAR reference 48Khz data stream.
      • Voice ID: Sequential voice ID overlay on 8 channels for ease of identification. Synthetic, easy to understand, voice. LED indicators show channel is being voiced. Unit is pre-programmed with generic sequencing phrases ("Channel One", "Channel Two", etc.).
      • AES/EBU Stereo digital outputs: All digital serial outputs are greater than 1.0VP-P into 75 Ohms. BNC connectors. All tones and data streams are in phase.
      • Input Voltage: 6VDC to 14VDC (12VDC nominal) or 6VAC to 12VAC 50/60Hz. Connector 2.1mm X 5.5mm X 11mm (inside x outside x Length). Unit is compatible with automobile battery voltage (13.2VDC).
      • Input Current: 100ma Maximum.
      • Input Power Supply: Two 120VAC to 12VDC @ 200ma converters.
      • Temperature: 0 C to 50 C (32 F to 125 F) non-condensing.
      • Size L X W X H:E 170mm x 140mm x 43mm (6.75in x 5.5in x 1.7in). 1U Rack compatible with adapter kit.
        Voice ID Phrase Editing Software Included:
      • Channel Talker Voice ID can say almost anything. Phonemes are optimized for English, and can be utilized to speak several different languages.
      • Create common messages to be played on each channel and a unique message for each channel.
      • Text-to-phoneme dictionary with over 125,000 words allow easy construction of phrases to speak.
      • Customize your presentation by employing the available 72 speech. elements (allophones), 43 sound effects, and 12 DTMF Touch Tones.
      • Programmable pause allows programming a quiet period for noise testing.
      • Voice ID information is downloaded to non-volatile EEPROM memory.
      • Change the message as often as needed. 100,000 write cycles typical.
        Voice ID Phrase Editing Software Specifications:
      • Software requires Windows XP,2000, NT, or 98SE. 333 MHZ processor, 128MB RAM, 25M Bytes of Disk space, 800x600 monitor or larger, and mouse.
      • Program up to 218 phonemes into 16 phrases. Configurable voice loudness, speed, and pitch.
      • Select words from dictionary, edit word sounds, and create new words and sounds.
      • Text-to-phoneme dictionary over 125,000 words for text-to-speech simplicity.

    Add Accessories for your CTD-8: