1. Киришүү
The Audio DSP DNR is a compact and powerful digital signal processing (DSP) device designed to significantly improve the audio quality from radio receivers, especially shortwave radios. It effectively reduces unwanted noise and applies digital filtering to enhance signal clarity, making communication clearer and more enjoyable. This device is ideal for integrating with older radio stations that lack built-in noise reduction capabilities.
2. Пакеттин мазмуну
Сураныч, пакетте төмөнкү нерселерди текшериңиз:
- 1 x Audio DSP DNR Host Unit
- 1 x 3.5 мм аудио кабель
- 1 x USB Type-C Data Cable (for power supply)
- 1 x Set of Machine Corner Pads
3. Түзмөктүн жайгашуусу жана башкаруу элементтери
Familiarize yourself with the various controls and indicators on your Audio DSP DNR unit:
- ON/OFF баскычы: Аппаратты күйгүзөт же өчүрөт.
- PWR Port: 5V Micro USB power supply input.
- IN порт: 3.5mm audio signal input. Connect your radio receiver's audio output here.
- OUT порту: 3.5mm audio output. Connect to an external speaker or power ampөмүрлүү.
- Project Selection Buttons (▼ ▲): Used to navigate and select between DNR (Digital Noise Reduction) and FLT (Digital Filter) settings.
- Level Adjustment Buttons (◀ ▶): Adjust the level or grade of the selected DNR or FLT setting.
- Volume Adjustment Knob (+ VOL -): Чыгуу көлөмүн көзөмөлдөйт.
- Дисплей экраны: Shows current settings, audio spectrum, and other indicators.
- Audio Spectrum Display: Visual representation of the incoming audio signal.
- Камтылган динамик: Provides direct audio output from the unit.
- 'OL' Indicator: Displays 'OL' on the screen if the input signal amplitude is too large, indicating potential overload.
4. Орнотуу нускамалары
- Кубат туташуу: Connect the provided USB Type-C data cable to the PWR port on the Audio DSP DNR unit and to a 5V USB power source (e.g., a USB wall adapter, computer USB port).
- Аудио киргизүү: Use the provided 3.5mm audio cable to connect the audio output of your radio receiver to the 'IN' port on the Audio DSP DNR unit.
- Аудио чыгаруу: Connect an external speaker or power amplifier to the 'OUT' port using a 3.5mm audio cable. Alternatively, you can use the built-in speaker for direct audio.
- Жайгашкан жери: Attach the machine corner pads to the bottom of the unit for stability and to prevent scratching surfaces.
5. Иштөө нускамалары
- Күйгүзүү: Press the ON/OFF button to turn on the device. The display screen will illuminate.
- Үндү тууралоо: Use the '+ VOL -' knob to set your desired output volume.
- Select Function (DNR/FLT):
- Use the '▼' and '▲' buttons to select between 'DNR' (Digital Noise Reduction) and 'FLT' (Digital Filter) modes. The currently selected item will be indicated on the display.
- Adjust DNR (Digital Noise Reduction):
- When 'DNR' is selected, use the '◀' and '▶' buttons to adjust the noise reduction level. There are 10 grades of noise reduction. Experiment to find the optimal level for your audio source.
- Adjust FLT (Digital Filter):
- When 'FLT' is selected, use the '◀' and '▶' buttons to choose from 10 different digital filter levels. These include:
Figure 3: Display showing DNR and FLT settings. - 200Hz Low Pass Filter (LPF)
- 500Hz Low Pass Filter (LPF)
- 700Hz Low Pass Filter (LPF)
- 1kHz Low Pass Filter (LPF)
- 1.8kHz Low Pass Filter (LPF)
- 2kHz Low Pass Filter (LPF)
- 2.4kHz Low Pass Filter (LPF)
- 3.5kHz Low Pass Filter (LPF)
- 6kHz Low Pass Filter (LPF)
- Through (no filter applied)
The filter and noise canceller can be used together freely to achieve the best audio clarity.
- Monitor Audio Spectrum: The display provides a real-time audio spectrum, allowing you to visually monitor the processed signal.
- Өчүрүү: Press the ON/OFF button again to turn off the device when not in use.
6. Техникалык тейлөө
- Тазалоо: Түзмөктү тазалоо үчүн жумшак, кургак чүпүрөктү колдонуңуз. Катуу химиялык заттарды же абразивдүү материалдарды колдонуудан алыс болуңуз.
- Сактагыч: Аппаратты түз күн нурунан жана экстремалдык температурадан алыс салкын, кургак жерде сактаңыз.
- Колдонуу: Физикалык зыянды болтурбоо үчүн аппаратты этияттык менен колдонуңуз.
7. Кыйынчылыктарды
| Көйгөй | Мүмкүн себеп | Чечим |
|---|---|---|
| Түзмөк күйбөйт | No power supply or faulty cable | Ensure USB Type-C cable is securely connected to a 5V power source. Try a different cable or power adapter. |
| Аудио чыгышы жок | Incorrect audio connections, volume too low, or external speaker issue | Check 3.5mm audio cable connections to IN/OUT ports. Increase volume using the '+ VOL -' knob. Test with a different external speaker or use the built-in speaker. |
| 'OL' displayed on screen | Киргизүү сигналы amplitude is too large | Reduce the audio output volume from your radio receiver or source device. |
| Noise reduction/filtering is ineffective | DNR/FLT levels not optimally set | Experiment with different DNR grades and FLT frequencies using the adjustment buttons to find the best setting for your specific noise environment. |
8. Техникалык шарттар
| Өзгөчөлүк | Спецификация |
|---|---|
| Модел | DSP noise reducer (Audio DSP DNR) |
| Элемент номери | AL-282 |
| Электр камсыздоо | 5V Micro USB (Type-C input) |
| Аудио киргизүү | 3.5 мм Jack |
| Аудио чыгаруу | 3.5mm Jack, Built-in Speaker |
| DNR Levels | 10 класс |
| FLT Levels | 10 levels (200Hz, 500Hz, 700Hz, 1kHz, 1.8kHz, 2kHz, 2.4kHz, 3.5kHz, 6kHz LPF, Through) |
| Өлчөмдөрү (L x W x Y) | 100 мм x 70 мм x 17 мм (3.9 дюйм x 2.8 дюйм x 0.7 дюйм) |
| Болжолдуу салмагы (таңгакталган) | 170г |
| DIY Supplies Category | Электрдик |
| Origin | Материк Кытай |
9. Колдонуучунун кеңештери
- Жөндөөлөр менен эксперимент: The effectiveness of DNR and FLT can vary greatly depending on the type of noise and the audio source. Take time to experiment with different combinations of DNR grades and FLT frequencies to find the optimal settings for your specific listening conditions.
- Optimal Input Level: Avoid overdriving the input. If you see the 'OL' indicator, reduce the input volume from your radio to prevent distortion and ensure proper DSP processing.
- External Speaker Quality: While the device has a built-in speaker, connecting it to a high-quality external speaker or amplifier will provide a much better listening experience and allow you to fully appreciate the improved audio clarity.
10. Кепилдик жана колдоо
Бардык суроолор, техникалык колдоо же кепилдик дооматтар үчүн, сатуучуга же өндүрүүчүгө түздөн-түз кайрылыңыз. Сатып алганыңыздын далили катары сатып алуу дүмүрчөгүңүздү сактаңыз.
