
Capturing high-quality sound in OBS (Open Broadcaster Software) is essential for creating professional streams, recordings, or podcasts. Whether you're a content creator, gamer, or educator, understanding how to properly set up and optimize audio in OBS can significantly enhance your production value. This involves selecting the right audio sources, configuring input/output devices, adjusting levels, and applying filters to ensure clear and balanced sound. By mastering these techniques, you can avoid common issues like background noise, distortion, or uneven audio, delivering a seamless and engaging experience for your audience.
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What You'll Learn
- Setting Up Audio Devices: Configure microphones, mixers, and inputs for optimal sound capture in OBS Studio
- Adjusting Audio Settings: Fine-tune sample rate, bit depth, and channel options for clear audio recording
- Using Noise Suppression: Enable OBS’s noise gate and filters to reduce background interference effectively
- Monitoring Audio Levels: Utilize OBS’s audio mixer to avoid clipping and ensure balanced sound output
- Recording and Exporting Audio: Save audio tracks separately or with video for post-production flexibility

Setting Up Audio Devices: Configure microphones, mixers, and inputs for optimal sound capture in OBS Studio
Setting Up Audio Devices in OBS Studio
To begin capturing high-quality sound in OBS Studio, the first step is to configure your audio devices correctly. Start by opening OBS Studio and navigating to the "Settings" menu. Under the "Audio" tab, you’ll find options to select your primary audio devices. For microphones, choose the device you intend to use for voice capture from the "Mic/Auxiliary Audio" dropdown menu. If you’re using an external mixer or audio interface, ensure it is recognized by your system and appears in the list of available devices. Proper device selection is crucial, as it ensures OBS Studio routes audio correctly for recording or streaming.
Configuring Microphone Settings
Once your microphone is selected, adjust its settings for optimal sound capture. In the "Audio" settings, locate the "Mic/Auxiliary Audio" section and fine-tune the input volume. Use the "Mic/Aux Gain" slider to control the microphone’s sensitivity, ensuring the audio levels peak around -12 to -6 dB to avoid distortion. Enable the "Push-to-Mute" or "Push-to-Talk" feature if you prefer more control during live sessions. Additionally, activate the "Noise Suppression" and "Noise Gate" filters under the "Filters" section to minimize background noise and ensure clean audio output.
Integrating Mixers and External Devices
If you’re using a mixer or external audio interface, configure it as an input device in OBS Studio. Connect the mixer to your computer via USB or another supported method, and ensure it is set as the default audio input in your system settings. In OBS, select the mixer as the primary audio device under the "Mic/Auxiliary Audio" dropdown. Adjust the mixer’s output levels to match OBS Studio’s input requirements, ensuring the audio signal is strong but not clipping. For advanced setups, use the mixer’s routing options to send specific channels to OBS for individual track recording.
Testing and Monitoring Audio Inputs
Before going live or recording, test your audio setup to ensure everything is functioning correctly. In OBS Studio, use the "Audio Mixer" panel to monitor input levels in real time. Speak or play audio through your microphone or mixer while observing the meter levels. Adjust the gain or volume as needed to maintain optimal levels. Enable the "Mute" or "Solo" buttons to isolate specific audio sources during testing. If using multiple inputs, ensure there is no interference or feedback between devices.
Advanced Audio Configuration
For professional-grade audio capture, explore OBS Studio’s advanced audio settings. Enable "Advanced Audio Properties" to access features like sample rate adjustments, channel configuration, and audio sync settings. If you’re recording multiple audio tracks, configure OBS to capture each input as a separate track for post-production editing. Additionally, consider using third-party plugins or VST effects to enhance audio quality further. Regularly update your audio drivers and firmware to ensure compatibility and performance with OBS Studio.
By carefully configuring microphones, mixers, and inputs in OBS Studio, you can achieve clear, professional-quality sound for your streams or recordings. Take the time to test and fine-tune your setup to ensure the best possible audio experience for your audience.
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Adjusting Audio Settings: Fine-tune sample rate, bit depth, and channel options for clear audio recording
When adjusting audio settings in OBS (Open Broadcaster Software) to ensure clear audio recording, it's essential to understand the key parameters: sample rate, bit depth, and channel options. These settings directly impact the quality and compatibility of your audio capture. Start by accessing the audio settings in OBS, which can be found under the "Settings" menu, then navigate to the "Audio" tab. Here, you’ll find options to fine-tune these parameters according to your needs.
Sample Rate is the number of audio samples captured per second and is measured in Hertz (Hz). Common sample rates include 44.1 kHz (standard for CDs) and 48 kHz (standard for video and streaming). For most streaming and recording purposes, 48 kHz is recommended as it provides a good balance between quality and file size. However, if you’re working with professional audio or need higher fidelity, you might opt for 96 kHz or higher. To adjust the sample rate in OBS, go to the "Advanced Audio Properties" and set the "Sample Rate" dropdown to your desired value. Ensure your audio interface or device supports the selected rate to avoid compatibility issues.
Bit Depth determines the number of bits of information in each audio sample, affecting the dynamic range and signal-to-noise ratio. The most common bit depths are 16-bit (standard for CDs) and 24-bit (used for higher-quality recordings). For clear audio recording, 24-bit is preferable as it captures more detail and reduces the risk of noise. In OBS, the bit depth is often tied to your audio device’s capabilities, but you can verify or adjust it in the audio settings if your device supports multiple options. Keep in mind that higher bit depths result in larger file sizes, so balance quality with storage needs.
Channel Options refer to the number of audio channels being recorded, such as mono, stereo, or surround sound. For most streaming and recording scenarios, stereo (2 channels) is the standard choice, as it provides a balanced and immersive audio experience. In OBS, you can set the channel configuration under the "Audio" settings by selecting the appropriate option for your audio source. If you’re capturing audio from a microphone, ensure it’s set to stereo if your microphone supports it, or mono if it’s a single-channel device. For desktop audio or external sources, match the channel configuration to the source material to avoid phase issues or audio imbalances.
Finally, after adjusting these settings, test your audio to ensure everything sounds clear and as intended. Use OBS’s audio mixer to monitor levels and make real-time adjustments if needed. Regularly reviewing and fine-tuning these settings will help you maintain professional-quality audio in your recordings and streams. Remember that the optimal settings may vary depending on your specific use case, hardware, and audience, so experimentation is key to finding the best configuration for your needs.
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Using Noise Suppression: Enable OBS’s noise gate and filters to reduce background interference effectively
When capturing sound in OBS, background noise can significantly degrade the quality of your audio. One of the most effective ways to combat this is by using OBS’s built-in noise suppression tools, including the noise gate and filters. These features work together to minimize unwanted sounds, ensuring your audio is clear and professional. To begin, open OBS and navigate to the “Settings” menu. From there, select the “Audio” tab, where you’ll find options to configure your audio devices and apply noise suppression techniques.
The first step in using noise suppression is enabling the noise gate. A noise gate is a tool that automatically mutes or reduces the volume of audio signals below a certain threshold. This is particularly useful for cutting out constant background noises like hums, fans, or air conditioning. In OBS, go to the “Audio” settings and locate the “Noise Gate” section. Enable the noise gate for your microphone by checking the appropriate box. Adjust the threshold slider to set the level at which the gate activates—sounds quieter than this threshold will be suppressed. Experiment with the attack and release settings to control how quickly the gate responds to changes in audio levels.
In addition to the noise gate, OBS offers audio filters that can further enhance noise suppression. To apply these filters, right-click on your audio source in the “Sources” panel and select “Filters.” Click the “+” button and choose “Noise Suppression” from the dropdown menu. OBS uses the RNNoise library for this purpose, which is highly effective at reducing background noise while preserving the clarity of your voice. Adjust the filter’s strength to balance noise reduction and audio quality—higher settings remove more noise but may slightly affect your voice.
For even more control, consider combining the noise gate with other filters like the low-pass or high-pass filter. These filters can remove specific frequency ranges that often contain unwanted noise. For example, a low-cut (high-pass) filter can eliminate low-frequency rumble, while a high-cut (low-pass) filter can reduce high-pitched interference. To add these, follow the same process as adding the noise suppression filter, but select “Low-Pass” or “High-Pass” instead. Fine-tune the cutoff frequency to target the noise without impacting your voice.
Lastly, test your audio setup thoroughly before going live or recording. Speak at varying volumes and introduce controlled background noise to ensure the noise gate and filters are working as intended. OBS also allows you to monitor your audio levels in real-time, so keep an eye on the audio mixer to avoid clipping or excessive suppression. By effectively using OBS’s noise gate and filters, you can dramatically improve your audio quality, making your content more engaging and professional for your audience.
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Monitoring Audio Levels: Utilize OBS’s audio mixer to avoid clipping and ensure balanced sound output
Monitoring audio levels is a critical aspect of capturing high-quality sound in OBS, and the built-in audio mixer is your primary tool for achieving this. The audio mixer in OBS allows you to control and monitor the input levels of each audio source, ensuring that your sound output is clear, balanced, and free from distortion. To begin, open OBS and navigate to the "Mixer" section located at the bottom of the interface. Here, you’ll see volume sliders and meter displays for each active audio source, such as microphones, system audio, or external inputs. The meters will display the real-time audio levels, typically ranging from -60 dB to 0 dB, with 0 dB representing the maximum level before clipping occurs.
Clipping happens when the audio signal exceeds the maximum level, resulting in distorted and unprofessional sound. To avoid clipping, ensure that the audio levels peak below -6 dB to -3 dB. OBS provides visual feedback through the meter displays, which turn yellow as you approach -6 dB and red if the signal exceeds 0 dB. If you notice the meters frequently hitting the red zone, adjust the volume slider downward for that specific audio source. Conversely, if the levels are too low, increase the volume, but always keep an eye on the meters to prevent clipping. Regularly monitoring these levels during your recording or streaming session is essential to maintain consistent audio quality.
Balancing audio levels across multiple sources is equally important to ensure no single source overpowers another. For example, if you’re streaming gameplay with commentary, the game audio should complement your voice rather than drown it out. Use the audio mixer to adjust the relative volumes of each source. A good rule of thumb is to set your microphone as the primary audio source and adjust other inputs accordingly. OBS also allows you to set different audio tracks for specific scenes, giving you more control over how audio is mixed in different parts of your content.
OBS offers additional tools to enhance audio monitoring, such as the "Audio Monitor" feature. This allows you to listen to individual audio sources through your headphones, helping you fine-tune levels and identify any issues before they affect your output. To enable this, right-click on an audio source in the mixer and select "Audio Monitor." You can choose to monitor the audio via your desktop audio or a specific monitoring device. This feature is particularly useful for ensuring that all audio sources are functioning correctly and are properly balanced.
Finally, consider using OBS’s advanced audio settings for further control. Access these by clicking the "Settings" button in the bottom-right corner of the mixer. Here, you can adjust the global audio volume, enable noise suppression, and configure audio sync settings. Noise suppression can help reduce background noise, while audio sync ensures that your video and audio remain aligned. By combining these features with careful monitoring of the audio mixer, you can achieve professional-quality sound in your OBS recordings or streams. Regular practice and attention to detail will make monitoring audio levels second nature, ensuring your content always sounds its best.
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Recording and Exporting Audio: Save audio tracks separately or with video for post-production flexibility
When recording audio in OBS (Open Broadcaster Software), it’s essential to capture sound with flexibility in mind, especially for post-production. OBS allows you to record audio tracks separately or alongside video, giving you greater control during editing. To begin, open OBS and navigate to the "Audio Mixer" section. Here, you can select and configure your audio sources, such as microphones, system audio, or external devices. Ensure each audio source is properly labeled and set to the desired volume levels to avoid clipping or distortion. For maximum flexibility, enable the "Record Audio Tracks Separately" option in the "Output" settings under the "Recording" tab. This will save each audio source as an individual track, allowing you to adjust or replace them later in editing software.
Once your audio sources are configured, start your recording as usual. OBS will capture both video and audio, but with separate audio tracks if you enabled the option. This is particularly useful if you plan to fine-tune audio levels, add effects, or remove background noise in post-production. For example, if you’re recording a podcast or interview, having separate tracks for each speaker makes it easier to balance their volumes or edit out mistakes without affecting the video. After stopping the recording, OBS will save the file in your designated folder, typically in MKV format, which preserves all tracks.
Exporting audio from OBS for post-production requires a few additional steps. If you recorded with separate audio tracks, you’ll need to extract them using software like Audacity or Adobe Premiere Pro. Open the recorded file in your editing software, and you’ll find each audio track isolated. From here, you can export each track as a standalone WAV or MP3 file for further editing. Alternatively, if you recorded audio with the video, you can still separate the tracks in most video editing programs by detaching or extracting the audio.
For users who prefer to keep audio and video together but still want flexibility, OBS allows you to record in formats like MP4 or MOV while maintaining high-quality audio. However, this approach limits your ability to edit audio independently. To strike a balance, consider recording in MKV with separate audio tracks and then converting the file to MP4 for final export. This way, you retain the flexibility of separate tracks during editing but end up with a more widely compatible file for distribution.
Finally, always test your audio setup before starting a critical recording session. Play back a short test clip to ensure all tracks are being captured correctly and that there are no synchronization issues. By mastering these techniques, you’ll be able to capture sound in OBS efficiently and maintain the flexibility needed for professional post-production work. Whether you’re creating content for YouTube, streaming, or podcasts, saving audio tracks separately or with video ensures your final product meets the highest standards.
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Frequently asked questions
To set up audio capture in OBS Studio, go to the "Settings" menu, select the "Audio" tab, and configure your audio devices. Choose your microphone or audio source under "Mic/Auxiliary Audio" and ensure the correct device is selected. Adjust the volume levels and enable monitoring if needed.
If OBS is not capturing sound, check if your microphone is properly connected and set as the default input device in your system settings. In OBS, ensure the correct microphone is selected under "Mic/Auxiliary Audio" and that the volume is not muted or set too low. Also, verify that the audio source is enabled in the "Sources" panel.
To capture system audio, add a "Desktop Audio" source in OBS by clicking the "+" button under the "Sources" panel and selecting "Desktop Audio." Choose the appropriate audio output device (e.g., speakers or headphones) from the list. Ensure the volume is adjusted correctly and the source is enabled.











































