NearStream AM10B ショットガンマイク ユーザーマニュアル

1. はじめに

Thank you for choosing the NearStream AM10B Shotgun Microphone. This professional-grade microphone is designed to deliver crystal-clear audio for various applications, including camera recording, PC use, podcasting, and video conferencing. Featuring an 8-microphone array with intelligent noise cancellation, three selectable polar patterns, and a long-lasting battery, the AM10B offers versatility and high-quality sound capture. Please read this manual thoroughly to ensure proper setup and optimal performance of your device.

2. 箱の中身

Upon unpacking your NearStream AM10B, please verify that all the following components are included:

• AM10B Microphone (x1)
• Microphone Cover Foam (Windscreen) (x1)
• Camera Cold Shoe Mount (x1)
• USB-C cable with USB-A to USB-C adapter (6.5ft) (x1)
• 3.5mm TRS to TRS cable (1.6ft) (x1)
• ユーザーマニュアル (x1)

Image: All components included in the NearStream AM10B package.

3. セットアップ手順

Follow these steps to set up your NearStream AM10B microphone for various uses.

3.1 コンピューター（PC/ラップトップ）への接続

1. Ensure the AM10B microphone is charged or connected to a power source.
2. Connect the AM10B to your computer using the provided USB-C cable. If your computer only has USB-A ports, use the included USB-A to USB-C adapter.
3. The microphone is plug-and-play and should be automatically recognized by Windows, macOS, or Linux. No additional drivers are typically needed.
4. Select 'NearStream MIC AM10B' as your input device in your computer's sound settings or recording software.

3.2 Connecting to a Camera (DSLR/Camcorder)

1. Attach the camera cold shoe mount to the 1/4'' mounting thread at the base of the AM10B microphone.
2. Slide the cold shoe mount onto your camera's hot shoe or cold shoe slot and secure it.
3. Connect the AM10B's 3.5mm MIC OUT port to your camera's 3.5mm microphone input jack using the provided 3.5mm TRS to TRS cable.
4. マイクの電源がオンになっていることを確認してください。
5. Adjust the audio input levels on your camera as needed.

Image: Demonstrates the versatile connectivity of the AM10B microphone with both computers and cameras.

Image: Visual guide to the strong compatibility of the AM10B with different devices.

4. 操作手順

Understand the key functions and controls of your AM10B microphone for optimal audio capture.

4.1 電源オン/オフ

• To power on, press and hold the power button located on the microphone.
• 電源を切るには、もう一度電源ボタンを長押しします。

4.2 極性パターンの選択

The AM10B offers three selectable polar patterns to suit different recording scenarios. Press the 'MODE' button on the microphone to cycle through the patterns:

• 全方向： Captures sound equally from all directions. Ideal for multi-person recordings, interviews, or ambient sound.
• カーディオイド: Primarily picks up sound from the front, reducing side and rear noise. Best for single speakers, podcasters, gaming streamers, and vocal recordings.
• 双方向: Captures sound from the front and rear, rejecting sound from the sides. Suitable for conversations between two speakers facing each other.

Image: Visual representation of the three versatile polar patterns available on the AM10B microphone.

Image: Demonstrates practical applications for each of the three polar patterns.

4.3 ゲインコントロール

The AM10B features a 3-level gain control switch. Adjust this switch to fine-tune the output volume of the microphone to match your recording environment and device input levels.

4.4 ミュート機能

Press the mute button for quick silencing during recordings. This is particularly useful for live streaming, online meetings, or any situation requiring immediate audio cutoff.

4.5 Sound Monitoring

Connect headphones to the 3.5mm monitoring jack on the AM10B to listen to your audio in real-time. This allows for immediate adjustments to ensure high-quality sound output.

Image: User monitoring audio output from the AM10B microphone in real-time.

5. 特徴

The NearStream AM10B is equipped with advanced features to enhance your audio recording experience:

• 8-Microphone Array with Intelligent Noise Canceling: Combines beamforming technology and AI noise suppression for a 70dB vocal signal-to-noise ratio, capturing clear sound within a 10ft radius while filtering ambient noise.
• Three Polar Patterns: Easily switch between omni-directional, cardioid, and bi-directional modes for versatile recording in any scenario.
• 幅広い互換性: Plug-and-play functionality with USB-A, USB-C, or 3.5mm audio ports for PC, Mac, DSLR cameras, camcorders, and audio recorders.
• 12-Hour Battery Life & Sound Monitoring: A 2600mAh lithium-ion battery provides 12 hours of continuous use after a 4-hour charge. Monitor audio via the 3.5mm jack.
• 3-Level Gain Control & Mute Button: Fine-tune output volume and quickly mute audio for convenience during live sessions.
• 取り付けの柔軟性: Features a 1/4'' mounting thread and a cold shoe mount with a swivel arm for easy installation on various setups.

Image: Highlights the studio-quality sound recording capabilities with the 8-mic array.

Image: Illustrates the effectiveness of the advanced AI-powered noise cancellation feature.

Image: Details the rechargeable battery specifications and USB-C charging port.

Image: Refined design of the AM10B, highlighting all control buttons and ports.

6. 仕様

7. メンテナンス

To ensure the longevity and optimal performance of your NearStream AM10B microphone, follow these maintenance guidelines:

• クリーニング： マイクの外装を清掃する際は、柔らかく乾いた布をご使用ください。刺激の強い化学薬品、溶剤、研磨剤の使用は避けてください。
• ストレージ： Store the microphone in a cool, dry place away from direct sunlight and extreme temperatures. Use the original packaging or a protective case when not in use.
• バッテリーのケア： For optimal battery life, avoid fully discharging the microphone frequently. Charge it regularly, even if not in use for extended periods.
• ウインドスクリーン: The included foam windscreen helps reduce wind noise and protect the microphone capsule. Clean it periodically by gently rinsing with mild soap and water, then air dry completely before reattaching.

8。 トラブルシューティング

If you encounter issues with your NearStream AM10B microphone, refer to the following common troubleshooting steps:

8.1 オーディオ出力/入力がない

• 接続を確認してください: Ensure all cables (USB or 3.5mm TRS) are securely connected to both the microphone and your device.
• 電源ステータス： Verify that the microphone is powered on and has sufficient battery charge.
• デバイスの設定： Confirm that the AM10B is selected as the default input/output device in your computer's sound settings or camera's audio input menu.
• 音量レベル: Adjust the gain control on the microphone and the input/output volume on your connected device.
• ケーブルの完全性: Try using a different cable to rule out a faulty connection.

8.2 Driver Issues (PC/Mac)

Although the AM10B is plug-and-play, occasional driver conflicts can occur. If you experience issues with your computer recognizing the microphone:

1. Disconnect the AM10B from your computer.
2. Open Device Manager (Windows) or System Information (macOS).
3. Locate any entries related to 'NearStream MIC AM10B' under 'Audio inputs and outputs' or 'Sound, video and game controllers'.
4. Right-click on these entries and select 'Uninstall device'. If prompted, confirm the uninstallation.
5. コンピュータを再起動します。
6. Reconnect the AM10B microphone. Your computer should reinstall the necessary drivers automatically.

8.3 Poor Audio Quality / Excessive Noise

• 極性パターン: Ensure you have selected the appropriate polar pattern for your recording environment. For single-person recording, Cardioid mode is often best.
• ウインドスクリーン: Use the included foam windscreen, especially in outdoor environments, to minimize wind noise.
• ゲイン調整: If audio is distorted, reduce the gain. If it's too quiet, increase the gain. Avoid setting the gain too high, which can introduce hiss.
• 環境： Record in a quiet environment whenever possible. While AI noise cancellation is effective, it cannot eliminate all background noise.

9. 保証とサポート

NearStream products are designed for reliability and performance. For specific warranty details and technical support, please refer to the warranty card included in your product packaging or visit the official NearStream webサイトでご確認ください。保証請求の際は購入証明として領収書を保管してください。