คุณภาพ โมดูลเสียงเด็ก & กดปุ่มโมดูลเสียง โรงงาน

.gtr-container { font-family: 'Arial', sans-serif; font-size: 14px !important; line-height: 1.6; color: #333; max-width: 800px; margin: 0 auto; padding: 20px; background-color: #f9f9f9; border: 1px solid #e0e0e0; border-radius: 4px; } .gtr-heading { font-size: 18px !important; font-weight: 600; color: #2a5885; margin: 20px 0 10px; padding-bottom: 5px; border-bottom: 2px solid #e0e0e0; } .gtr-subheading { font-size: 16px !important; font-weight: 600; color: #3a3a3a; margin: 15px 0 8px; } .gtr-list { margin: 10px 0; padding-left: 20px; } .gtr-list li { margin-bottom: 8px; } .gtr-table { width: 100%; border-collapse: collapse; margin: 15px 0; font-size: 14px !important; } .gtr-table th { background-color: #2a5885; color: white; text-align: left; padding: 8px 12px; font-weight: 600; } .gtr-table td { padding: 8px 12px; border-bottom: 1px solid #e0e0e0; } .gtr-table tr:nth-child(even) { background-color: #f2f2f2; } .gtr-highlight { font-weight: 600; color: #2a5885; } The following is a complete technical indicator system and test method for evaluating the performance of the Baby Sound Module: I. Core Function Testing Cry Detection Accuracy Tested using a standard infant cry database (such as the Baby2023 dataset), the accuracy for classifying cry types such as hunger and pain must be ≥95%. Ambient noise suppression must meet the ISO 7779 standard test, maintaining a detection rate of 90% or higher even in 60dB background noise. Response Performance End-to-end response latency must be

.gtr-container { font-family: 'Arial', sans-serif; font-size: 14px !important; line-height: 1.6 !important; color: #333; max-width: 800px; margin: 0 auto; padding: 20px; background-color: #f9f9f9; border: 1px solid #e0e0e0; border-radius: 4px; } .gtr-heading { font-size: 16px !important; font-weight: 600; color: #2c3e50; margin: 20px 0 10px 0; padding-bottom: 5px; border-bottom: 2px solid #e0e0e0; } .gtr-subheading { font-size: 15px !important; font-weight: 600; color: #34495e; margin: 15px 0 8px 0; } .gtr-list { margin: 10px 0; padding-left: 20px; } .gtr-list li { margin-bottom: 8px; } .gtr-note { font-style: italic; color: #7f8c8d; margin-top: 15px; padding: 10px; background-color: #f0f0f0; border-left: 3px solid #95a5a6; } Typical Applications and Technical Implementations of the Baby Sound Module in Music-Playing Toys 1. Core Function Implementation Bluetooth Audio Transmission Uses a Bluetooth module supporting the A2DP protocol (such as the ANS-BT302DM) to wirelessly connect to a phone/tablet and play music stored on the host device. The module has a built-in QCC3040 chip and supports aptX low-latency encoding, ensuring audio synchronization to meet interactive needs. Local Sound Effect Playback Pre-installed 12 basic instrument sound libraries (piano, xylophone, etc.), with corresponding sound effects triggered by touch. Uses WAV format audio recording technology to support multi-track playback. 2. Hardware Integration Structural Design The module is enclosed in an environmentally friendly ABS resin casing, sealed with silicone to the toy body, and complies with EN7 standards. The speaker's vent design must take acoustic reflections into account and is typically located on the toy's belly or back. Power System Powered by a 3.7V lithium battery, the quiescent current is less than 5μA, supporting over 30 hours of continuous playback. Automatically triggers a low-battery alert (once every 2 minutes). III. Interactive Control Logic Connection Management Single-button control design: Single-click to reconnect/play, double-click to pair, long-press to clear history. Automatically shuts off after 5 minutes of no connection, supporting up to 8 devices. Sound Effect Switching Select different tones using physical buttons or touch areas, supporting melody combinations. Synchronized lighting effects enhance the immersive experience. This solution has been successfully applied to products such as musical panda dolls and electronic keyboard books, with a measured Bluetooth transmission range of up to 15 meters (in an accessible environment).

.gtr-container { font-family: 'Segoe UI', Arial, sans-serif; color: #333333; font-size: 14px !important; line-height: 1.6; max-width: 900px; margin: 0 auto; padding: 20px; } .gtr-heading { font-weight: 600; color: #2c3e50; margin: 25px 0 15px 0; font-size: 18px !important; } .gtr-subheading { font-weight: 600; color: #34495e; margin: 20px 0 10px 0; font-size: 16px !important; } .gtr-paragraph { margin-bottom: 15px; } .gtr-list { margin: 15px 0; padding-left: 25px; } .gtr-list li { margin-bottom: 10px; } .gtr-table { width: 100%; border-collapse: collapse; margin: 20px 0; font-size: 14px !important; } .gtr-table th { background-color: #f5f7fa; text-align: left; padding: 10px; border: 1px solid #ddd; font-weight: 600; } .gtr-table td { padding: 10px; border: 1px solid #ddd; } .gtr-note { font-style: italic; color: #7f8c8d; margin-top: 10px; font-size: 13px !important; } The application of deep learning models in sound recognition has formed a comprehensive technical framework. Its core value lies in achieving high-precision, multi-scenario sound feature extraction and semantic understanding through end-to-end learning. The following are key technical application directions and typical model architectures: 1. Acoustic Feature Extraction Optimization of Time-Frequency Analysis Using CNNs to automatically learn local features (such as harmonic structure and formants) from mel-spectrograms, replacing traditional manual feature engineering using MFCCs, this approach improves classification accuracy by 27% in noisy environments on the UrbanSound8K dataset. Lightweight models such as MobileNetV3, using depthwise separable convolutions and PSA attention modules, achieve 100% top-5 bird sound recognition accuracy with only 2.6M parameters. Enhanced Time Series Modeling The CRNN hybrid architecture (CNN + BiLSTM) simultaneously captures the spectral characteristics and temporal dependencies of sound events, achieving an F1 score of 92.3% for detecting sudden events such as glass breaking. Transformer uses a self-attention mechanism to process long audio sequences, achieving over 99% accuracy in classifying infant cries for hunger and pain. II. Specific Application Scenarios Application Areas Technical Solutions Performance Metrics Pet Health Monitoring RNN-Based Voice Emotion Analysis System, Supporting Classification of Over 10 Voice Types Smart Home Security End-to-End Abnormal Sound Detection Using CNN+CTC Response Latency

.gtr-container { font-family: 'Segoe UI', Arial, sans-serif; color: #333333; font-size: 14px !important; line-height: 1.6; max-width: 800px; margin: 0 auto; } .gtr-heading { font-weight: 600; color: #1a5276; margin: 20px 0 10px 0; font-size: 18px !important; border-bottom: 1px solid #d4d4d4; padding-bottom: 5px; } .gtr-subheading { font-weight: 600; color: #2874a6; margin: 15px 0 8px 0; font-size: 16px !important; } .gtr-list { margin: 10px 0; padding-left: 20px; } .gtr-list li { margin-bottom: 8px; } .gtr-note { background-color: #f8f9fa; border-left: 4px solid #3498db; padding: 10px 15px; margin: 15px 0; font-size: 14px !important; } The following is a complete solution for implementing Bluetooth connection and audio transmission on the Baby Sound Module host device: I. Hardware Requirements Bluetooth Module Selection A Bluetooth audio module that supports the A2DP/HFP protocol (such as the ANS-BT301M) must be selected. This module supports the BLE+SPP+audio protocol stack and integrates 10-band EQ. The module should have an I²S interface to output decoded audio data and be used with an amplifier circuit to drive the speaker. Power Supply Design A 3.7V lithium battery is recommended for power supply. The quiescent current should be less than 5μA to extend the battery life of the toy. II. Host Device Connection Process Bluetooth Pairing Initialization After turning on Bluetooth, the host device (phone/tablet) searches for the MA broadcast by the module. C address. The default pairing code is typically "0000" or "1234." After successful connection, the module indicator will turn solid and a notification tone will play. Protocol Stack Configuration A2DP is used to establish the audio transmission link, and AVRCP is used for playback control (pause/skip, etc.). SBC encoding is recommended for compatibility. If supported by the device, AAC/MP3 can be switched to improve sound quality. III. Audio Transmission Implementation Data Stream Processing The host device compresses the audio file into data packets that comply with the Bluetooth protocol and transmits them over the ACL asynchronous link. The module receives the data and converts it into a PCM audio signal using the LC3 or SBC decoder. Latency Optimization Enabling aptX LL coding reduces end-to-end latency to under 40ms, making it suitable for interactive toys. Disabling DSP audio processing can reduce additional latency by 20-30ms. IV. Stability Measures Anti-interference Design Uses Bluetooth 5.0+'s FHSS frequency hopping technology (1600 channel changes per second) to reduce interference in the 2.4GHz band. The module firmware should implement an automatic reconnection mechanism to resume playback within 10 seconds after a disconnection. Multi-device Management The module can store up to eight paired devices and supports simultaneous connection to two master devices (single-device playback only). Connection priority can be visually managed using the Bose Connect app. This solution has been used in products such as the Musical Panda Plush, with a measured transmission distance of up to 15 meters (in an accessible environment).

.gtr-container { font-family: 'Arial', sans-serif; font-size: 14px !important; line-height: 1.6 !important; color: #333; max-width: 800px; margin: 0 auto; padding: 20px; } .gtr-heading { font-size: 18px !important; font-weight: 600; color: #2a5885; margin: 20px 0 10px 0; padding-bottom: 5px; border-bottom: 1px solid #e0e0e0; } .gtr-subheading { font-size: 16px !important; font-weight: 600; color: #3a3a3a; margin: 15px 0 8px 0; } .gtr-list { margin: 10px 0; padding-left: 20px; } .gtr-list li { margin-bottom: 8px; } .gtr-note { background-color: #f5f5f5; border-left: 4px solid #2a5885; padding: 12px; margin: 15px 0; font-size: 14px !important; } The Baby Sound Module solution for playing music/sound effects stored on the main device is as follows: 1. Bluetooth Audio Transmission Solution Hardware Configuration A Bluetooth audio module (such as the ANS-BT301M) that supports the A2DP/HFP protocol and integrates an audio decoder chip and amplifier circuit to drive the speaker is required. The main device (mobile phone/tablet) acts as the Bluetooth transmitter, and the module acts as the receiver to establish a stable connection. Audio Protocol Support The module must be compatible with SBC/AAC/MP3 decoding formats to ensure it can play mainstream audio files. Select your local music library or custom sound effects for transmission via the mobile app. 2. Wi-Fi Remote Control Solution Network Module Integration When developing based on the OpenHarmony system, you can use the UDP protocol. Receives audio control commands from the host device. Requires a pre-installed music storage chip or external TF card for storage expansion. Interaction Logic The host device app transfers audio files in segments to the module's cache for playback. Supports remote pause/song switching and other control functions. III. Local Storage and Playback Solutions Audio Pre-burning Write WAV audio to the module's Flash memory via a USB-TTL tool. Decode and output the stored audio data stream when playback is triggered. Dynamic Update Mechanism Some modules support OTA updates to the sound effect library. Select one of these solutions based on your product's positioning. Bluetooth solutions are suitable for real-time interaction, Wi-Fi solutions are suitable for smart home integration, and local storage solutions prioritize stability.