3662108

Information

• Patent Grant
• 3662108

• References
• Source

• Patent Number

  3,662,108

• Date Filed

  Not available

• Date Issued

  Tuesday, May 9, 1972
  52 years ago

• CPC

  • H03H17/0216 - Quefrency domain filters
  • G10K11/178 - by electro-acoustically regenerating the original acoustic waves in anti-phase
  • H03H17/0286 - Combinations of filter structures
  • G10K2210/3025 - Determination of spectrum characteristics
  • G10K2210/505 - Echo cancellation
  • G10L2021/02082 - the noise being echo, reverberation of the speech
  • G10L2021/02166 - Microphone arrays; Beamforming
  • Y10S367/901 - Noise or unwanted signal reduction in nonseismic receiving system

• US Classifications

  • 704 - Data processing: speech signal processing, linguistics, language translation, and audio compression/decompression
  • 367 - Communications, electrical: acoustic wave systems and devices
  • 381 - Electrical audio signal processing systems and devices
  • 455 - Telecommunications