ANF (AUTOMATIC NOISE FILTER) STC-H156 Professional digital noise filtering device

ANF is a compact mobile device which filters out noise enabling the listener to hear speech clearly. It is the right choice for live processing in field conditions. ANF has 7 types of automatically adapting noise filters; the setting of the filters are adjustable via LCD screen and keyboard.

Applications

Police, Forensic labs and other Law Enforcement Agencies: live sound quality improvement when recording or listening in a field environment.

Audio Engineers: mobile processing of recorded audio data.

Broadcasting Companies: mastering of “live” interviews an reports. Live speech quality improvement when recording in field conditions.

Highlights

• On-the-fly adjustment of filtering parameters during signal input and playback
• Effective against different noise sources: communication channel interferences, office equipment, industrial and
• vehicle engines, street traffic, environmental noises, slow or varying music, hiss and rumbling, reverberations and echo effects
• Original methods of stereo processing: using reference channel
• High quality sound
• Compact size

Features

• Real-time processing
• Filtering parameters retention
• Listening and filtering in the repetitive operation
• Available filters:
  • single channel adaptive, distortion compensation
  • dual channel reference adaptive, distortion compensation
  • adaptive inverse filtering
  • harmonics (tone) filtering
  • adaptive broadband filtering
  • composite (inverse and broadbanded adaptive) filtering
  • pulse-like filtering
• Additional processing types include:
  • harmonics suppression
  • timbre correction
  • pseudo-stereo
  • loop playback from internal memory of 60 sec of audio
• Mobile and robust construction, small size and weight makes ANF ideal for use by military or law enforcement agencies. It can be powered by standard power supply or internal battery

Technical characteristics

• Microphone, line and telephone inputs
• Sine signal of nominal level and any frequency suppression depth: 60 dB and more
• White noise of nominal level suppression depth: 50 dB and more for dual-channel scheme
• Signal sampling frequency: 11025, 22050 Hz
• Size: 205x78x280 mm
• Weight: 660 g

Delivery set

• ANF device
• Built-in power supply (upon request)
• Power supply adapter/ external supply
• Signal input/output cables
• Headphones

Credentials