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en/docs/dev_doc/evb/a316_ls_mic_v2/dnr_effect.md
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title: AI Microphone Noise Reduction Effect Demonstration
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status: new
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---
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# AI Microphone Noise Reduction Effect Demonstration
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This demonstration document **showcases the noise reduction capabilities of AI microphones in noisy office environments under different parameter settings**. Each scenario provides online playback functionality for audio files, allowing you to intuitively experience the sound quality differences under various parameter settings.
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## 1. 11ms -200dB AI Noise Reduction Effect
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### Effect Description
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- Delay Time: 11 milliseconds
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- Noise Reduction Depth: -200dB
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- Characteristics: Ultra-low latency, deep noise reduction, suitable for scenarios requiring high real-time performance
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### Audio Demonstration
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- Left Channel (After Noise Reduction): [Play](/assets/images/aimic/auido-img/11ms_200dB_noise_reduction_L.wav)
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- Right Channel (Original Audio): [Play](/assets/images/aimic/auido-img/11ms_200dB_noise_reduction_R.wav)
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- Audio Source File: [Download](/assets/images/aimic/auido-img/11ms_200dB_noise_reduction_source.aup3)
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### Effect Comparison
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## 2. 50ms -200dB AI Noise Reduction Effect
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### Effect Description
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- Delay Time: 50 milliseconds
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- Noise Reduction Depth: -200dB
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- Characteristics: Medium latency, deep noise reduction, suitable for scenarios requiring high audio quality
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### Audio Demonstration
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- Left Channel (After Noise Reduction): [Play](/assets/images/aimic/auido-img/50ms_200dB_noise_reduction_L.wav)
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- Right Channel (Original Audio): [Play](/assets/images/aimic/auido-img/50ms_200dB_noise_reduction_R.wav)
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- Audio Source File: [Download](/assets/images/aimic/auido-img/50ms_200dB_noise_reduction_source.aup3)
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### Effect Comparison
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## 3. 11ms -50dB AI Noise Reduction Effect
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### Effect Description
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- Delay Time: 11 milliseconds
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- Noise Reduction Depth: -50dB
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- Characteristics: Ultra-low latency, moderate noise reduction, preserves more ambient sound
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### Audio Demonstration
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- Left Channel (After Noise Reduction): [Play](/assets/images/aimic/auido-img/11ms_50dB_noise_reduction_L.wav)
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- Right Channel (Original Audio): [Play](/assets/images/aimic/auido-img/11ms_50dB_noise_reduction_R.wav)
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- Audio Source File: [Download](/assets/images/aimic/auido-img/11ms_50dB_noise_reduction_source.aup3)
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### Effect Comparison
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## 4. 50ms -50dB AI Noise Reduction Effect
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### Effect Description
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- Delay Time: 50 milliseconds
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- Noise Reduction Depth: -50dB
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- Characteristics: Medium latency, moderate noise reduction, balances audio quality and noise reduction effect
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### Audio Demonstration
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- Left Channel (After Noise Reduction): [Play](/assets/images/aimic/auido-img/50ms_50dB_noise_reduction_L.wav)
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- Right Channel (Original Audio): [Play](/assets/images/aimic/auido-img/50ms_50dB_noise_reduction_R.wav)
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- Audio Source File: [Download](/assets/images/aimic/auido-img/50ms_50dB_noise_reduction_source.aup3)
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### Effect Comparison
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## 5. 11ms -50dB AI Noise Reduction + Reverb Singing Effect
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### Effect Description
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- Delay Time: 11 milliseconds
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- Noise Reduction Depth: -50dB
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- Characteristics: Ultra-low latency, moderate noise reduction, added reverb effect, suitable for singing scenarios
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### Audio Demonstration
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- Left Channel (After Noise Reduction): [Play](/assets/images/aimic/auido-img/11ms_50dB_reverb_singing_L.wav)
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<!-- - Right Channel (Original Audio): [Play](/assets/images/aimic/auido-img/11ms_50dB_reverb_singing_R.mp3) -->
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- Audio Source File: [Download](/assets/images/aimic/auido-img/11ms_50dB_reverb_singing_source.aup3)
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<!-- ### Effect Comparison
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 -->
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## Instructions for Use
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1. All audio files support online playback
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2. Headphones or professional audio equipment are recommended for optimal listening experience
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3. Audio file format is WAV, with 44.1kHz sampling rate and 320kbps bit rate
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4. Effect comparison images show frequency spectrum analysis before and after noise reduction
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5. Source file recording tool - [Download](/assets/images/aimic/auido-img/Audacity64位_3.1.3.0.exe)
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## Technical Parameter Description
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- Delay Time: Refers to the time required for audio processing; 11ms is ultra-low latency, 50ms is medium latency
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- Noise Reduction Depth: Indicates the intensity of noise reduction; -200dB is deep noise reduction, -50dB is moderate noise reduction
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- Reverb Effect: Reverb parameters specially optimized for singing scenarios, providing a natural sense of space
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## Application Scenario Recommendations
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1. 11ms -200dB: Suitable for game streaming, video conferences, and other scenarios requiring high real-time performance
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2. 50ms -200dB: Suitable for professional recording, music production, and other scenarios requiring high audio quality
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3. 11ms -50dB: Suitable for daily calls, live streaming, and other scenarios where preserving some ambient sound is desired
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4. 50ms -50dB: Suitable for podcast recording, audiobooks, and other scenarios requiring balanced audio quality and noise reduction
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5. 11ms -50dB+Reverb: Suitable for singing, voice acting, and other scenarios requiring artistic effect processing
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en/docs/dev_doc/evb/a316_ls_mic_v2/user_guide.md
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en/docs/dev_doc/evb/a316_ls_mic_v2/user_guide.md
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# AI Noise-Canceling Microphone
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## I. **Control Precautions**
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1. Before powering on a new board, connect an ammeter to check if the overall current is normal to avoid burning the chip due to excessive current.
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2. When testing channel microphone audio, the MIC-A and MIC-B switches can only be tested by alternating them. Enabling both simultaneously will result in reduced volume.
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{width="200" }
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!!! warning "3. Caution"
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When connecting a dynamic microphone to the XLR channel, ensure the +48V switch is turned off to prevent damage to the microphone.
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4. The 10dB, 20dB, and 30dB switches should be toggled individually to achieve the corresponding gain values. Only one switch should be enabled at a time, with the other two disabled. For example, when enabling 10dB, the other two must be disabled.
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{width="400" }
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5. The white power indicator light next to the USB port is excessively bright and may cause eye strain. The resistor can be changed to 1.2-1.5K to reduce brightness.
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{width="400"}
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[//]: # ({width="400" style="transform: rotate(90deg);margin-left:150px;"})
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## II. Button Description
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{width="500" }
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## III. PC Control Software Usage Instructions
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You can set up the required scenario in the software. After opening, there will be an operation interface and a CMD window displaying logs.
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<div class="grid cards" markdown>
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- {width="400" }
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- {width="400" }
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- {width="400" }
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</div>
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After adjusting the settings, click "Update Parameters in Real-time" in the lower left corner to apply changes to the device. If the settings are applied correctly, logs will be displayed.
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After configuration, if you need to save the settings, click "Save Parameters to PC"
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