A practical DSP solution for mobile phone stereo sound recording - PowerPoint PPT Presentation

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A practical DSP solution for mobile phone stereo sound recording

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A practical DSP solution for mobile phone stereo sound recording
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A practical DSP solution for mobile phone stereo sound recording

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  1. A practical DSP solution for mobile phone stereo sound recording

  2. Alango Stereo Solution With 2 mic Scheme of Microphones Position In Mobile Phone 1 Microphone from the Left Side 1 Microphone from the Right Side Left Field Right Field Stereo Sensitivity Fields

  3. Stereo Technology Diagram 2 mic recording Alango 2 microphone system for stereo audio recordings provides following benefits: Right • True stereo, high quality sound recording • Wind reduction Alango processing Right Right Channel ADM1 Left Left ADM2 Left Channel Right Left

  4. Alango Stereo Solution With 4 mic Alango 4 microphone system for stereo audio recordings provides following benefits: • True stereo, high quality sound recording • Attenuation of sounds outside the camera view • Attenuation of user’s voice from the recording • Wind reduction 2 front microphones 2 rear microphones Scheme of Alango 4 microphone system Front side Rear Side

  5. Illustration of Stereo Recording with 4 mic Left Channel Right Channel Stereo Sensitivity Area Event Recording Right Side Left Side Sounds from Rear & Side directions Sounds from Rear & Side directions Rear Side

  6. Stereo Technology Diagram With 4 mic Sounds from Rear& Side directions Right Mobile phone sketch Alango processing Our system provides natural stereo sensation of incoming sounds ADM1 Right Channel Recording Environment Left Channel ADM2 Left Sounds from Rear& Side directions • Adaptive Directional Microphones (ADM) technology use signals from four omnidirectional microphones and according to phase difference, and programmed parameters system enhances sounds coming from left (left channel) or right (right channel) angular directions. • Sounds coming from side and rear directions (including user’s voice) are attenuated.

  7. Comparison of Stereo Sound Recordings Enjoy the listening and feel the difference by pressing the buttons below • Stereo sound recordings from: 1 song 2 song Test Setup Sony stereo microphone 2 phone mic (left, right), unprocessed Alango technology with 2 mic Alango technology with 4 mic