Dolby Solutions for Signal Processing

Dolby's innovations in signal processing for professional audio and broadcast applications ensure high-quality audio integrity. Dolby has created several products designed to meet professional needs for signal processing. See all Dolby signal processing products.

585 Time Scaling Processor

Film-to-video transfers (24-frame film to 25-frame video or vice versa) or time scaling broadcast programs to fit an allotted time slot will change the pitch of the original audio material, often resulting in a disappointing sounding mix. Correct it quickly and easily with the 585 Time Scaling Processor, an advanced, real-time audio pitch shifter and time scaler for multichannel audio.

Benefits include:
- Enables the highest-quality pitch correction
- Accepts up to eight channels of PCM audio or up to eight channels of decoded Dolby^® E or Dolby Digital and metadata
- Can pitch shift audio tracks up or down 15 percent
- Can time scale audio tracks 15 percent longer or shorter, while maintaining proper pitch

More information:
- AES white paper, "High Quality Multichannel Time Scaling and Pitch Shifting Using Auditory Scene Analysis"
- Spec sheet 
- User's manual
- Audio Media review, February 2004

740 Spectral Processor

For use at all levels of professional audio recording and mastering, this unique two-channel dynamic equalizer raises low-level signals in three frequency bands by as much as 20 dB, without affecting high-level signals.

Features include:
- Stereo link switch
- Sliding-band noise reduction circuits
- Adjustable thresholds and crossovers between bands

This product complies with the low voltage directive 73/23/EEC, however it is not CE approved, and is not for use in EU countries.

More information:
- Spec sheet
- User's manual

737 Soundtrack Loudness Meter

In film postproduction applications, this meter monitors and compares the subjective loudness of film trailers, advertisements, and other film soundtrack materials for TASA/MPAA/SAWA compliance.

For measuring broadcast program loudness, see the Dolby LM100 Broadcast Loudness meter.

More information:
- Spec sheet
- User's manual

Dolby Fax

This system includes the Dolby DP503 Two-Channel Digital Audio Encoder, the DP524 Two-Channel Digital Audio Decoder, and other ISDN system equipment for linking facilities worldwide with real-time CD-quality digital audio over ISDN.

For more information on Dolby Fax, please contact the following distributors who specialize in these systems.

See all Dolby signal processing products

See technical information for Signal Processing