iFLYTEK SR302 Pro Professional Digital Voice Recorder User Manual

1. Introduction

The iFLYTEK SR302 Pro is a professional digital voice recorder designed for high-quality audio capture and advanced offline transcription. Featuring an 8-core high-performance processor and a sophisticated 6-microphone array, it offers exceptional recording clarity and efficient, network-independent transcription in multiple languages and dialects. This manual provides essential information for setting up, operating, maintaining, and troubleshooting your device.

Figure 1: iFLYTEK SR302 Pro Digital Voice Recorder

2. Key Features

• 8-Core High-Performance Processor: Equipped with an 8-core processor (4*A73 + 4*A53, clocked up to 2.0GHz) for enhanced AI computing performance, ensuring fast and delay-free operation, especially for offline transcription.


Figure 2: 8-Core High-Performance Processor

• 6-Microphone Array: Features 2 directional microphones (10mm diameter) and 4 omnidirectional microphones, providing 360-degree sound coverage and accurate voice pickup up to 15 meters.


Figure 3: Microphone Array Configuration

• Full-Offline Transcription: Transcribe recordings in real-time or non-real-time without requiring a 4G/Wi-Fi network. Supports transcription in Chinese, English, Japanese, Korean, and Russian, along with 12 Chinese dialects.


Figure 4: Real-time Offline Transcription

• HD Speech Denoising: Utilizes iFLYTEK's self-developed core denoising algorithm to effectively reduce ambient noise and enhance human voice clarity.
• Smart Editing Functions: Includes automatic filtering of non-human voice and intonation, smart semantic segmentation, one-click highlight marking for key information, and number regularization for clear transcription.


Figure 5: Smart Editing Capabilities

• 32GB Mass Storage: Provides ample space for recording and transcribing files, suitable for various scenarios.
• User-Friendly Design: Features a slim body for comfortable grip, a 2.0-inch touch screen, separate recording alert light, and a customized UI for intuitive operation.

3. Specifications

Figure 6: Supported Languages and Dialects

4. Setup Guide

4.1 Charging the Device

1. Connect the provided Type-C cable to the charging port on the SR302 Pro.
2. Connect the other end of the cable to a 5V/2A USB power adapter (not included) or a computer's USB port.
3. The device's screen will indicate charging status. Ensure the device is fully charged before first use.

4.2 Powering On/Off

• To Power On: Press and hold the Power key until the screen illuminates and the device starts up.
• To Power Off: Press and hold the Power key until a power-off option appears on the screen. Select 'Power Off' to shut down the device.

5. Operating Instructions

5.1 Recording Audio

1. From the main screen, navigate to the recording function.
2. Press the dedicated Record/Voice key to start recording. The recording alert light will illuminate.
3. To pause recording, press the Record/Voice key again. To resume, press it once more.
4. To stop and save the recording, press the Stop button on the screen or the designated physical button (if available).

5.2 Offline Transcription

1. After recording, the device can automatically initiate real-time transcription, or you can select a saved recording for non-real-time transcription.
2. Select the desired language for transcription from the available options (Chinese, English, Japanese, Korean, Russian, and Chinese dialects).
3. The device will process the audio and display the transcribed text on the 2.0-inch screen.

Figure 7: Device in hand showing transcribed text

5.3 Playback and File Management

1. Access your saved recordings and transcriptions through the device's file manager.
2. Select a file to play back the audio or view the transcribed text.
3. Use the arrow keys and confirmation key for navigation and selection. Volume can be adjusted using the volume +/- keys.
4. To transfer files to a computer, connect the SR302 Pro via the Type-C cable. The device will appear as a removable storage device.

5.4 Smart Editing Features

• Highlight Marking: During playback or while viewing transcription, use the one-click tagging feature to mark key information.
• Semantic Segmentation: The device automatically segments recordings into logical sub-sections for easier review.
• Filtering: Non-human voices, intonations, exclamations, and repetitions are automatically filtered for cleaner transcription.

6. Maintenance

• Cleaning: Use a soft, dry cloth to clean the device's exterior. Do not use liquid cleaners or solvents.
• Storage: Store the device in a cool, dry place away from direct sunlight, extreme temperatures, and humidity.
• Battery Care: To prolong battery life, avoid fully discharging the battery frequently. Charge the device regularly, even if not in use for extended periods.
• Software Updates: Check the manufacturer's website periodically for firmware updates to ensure optimal performance and access to new features.

7. Troubleshooting

7.1 Device Will Not Power On

• Ensure the battery is sufficiently charged. Connect the device to a power source and allow it to charge for at least 30 minutes before attempting to power on again.
• Try a different charging cable or power adapter to rule out accessory issues.

7.2 Poor Recording Quality

• Ensure the microphones are not obstructed.
• Check the recording environment for excessive background noise. The device's denoising algorithm works best within its design parameters.
• Verify that the recording distance is within the recommended 15-meter range.

7.3 Transcription Errors or Inaccuracies

• Ensure the correct transcription language/dialect is selected.
• Speak clearly and at a moderate pace during recording for best transcription results.
• Minimize background noise during recording.

7.4 Device Not Recognized by Computer

• Ensure the Type-C cable is securely connected to both the device and the computer.
• Try connecting to a different USB port on your computer.
• Restart both the device and the computer.

8. User Tips

• Confidentiality: The SR302 Pro stores recordings and transcriptions locally. Files can only be copied via a data cable, making it suitable for confidential scenarios such as government meetings or closed-door discussions where network access is restricted or security is paramount.
• Optimal Recording Placement: For best results, especially in larger rooms, position the recorder centrally to leverage its omnidirectional microphones for 360-degree sound pickup. For specific speakers, orient the directional microphones towards them.
• Battery Management: While the 2000mAh battery offers significant usage time, for long events, consider carrying a portable power bank to ensure uninterrupted recording.

9. Warranty and Support

iFLYTEK provides quality assurance for the SR302 Pro Digital Voice Recorder.

• Genuine Product Guarantee: We guarantee that this is a 100% genuine product. In case of a counterfeit product, a 10-times compensation will be provided.
• Quality Problems: If you encounter any quality problems with your device, please contact customer service within 7 days of receipt for free return assistance.
• After-sales Service: We inspect goods quality before shipment. Should unexpected problems arise, please contact our customer service team. We are committed to providing a response within 12 hours and offering effective solutions.
• User Responsibility: Man-made damage to the device is the full responsibility of the buyer.

For further support or inquiries, please refer to the contact information provided with your purchase or visit the official iFLYTEK support website.