Elliot Kim
Audio interfaces and sound cards are devices that bring audio in and out of a computer. Sound cards are traditionally built into a computer, while audio interfaces are external devices that are connected through USB or Thunderbolt. Audio interfaces are specifically designed to provide high-quality audio and offer more control over input levels, speaker volume, and headphone volume. They are also useful for recording due to their low latency, and they can support different types of microphones and instruments. Sound cards, on the other hand, have improved in quality over the years, and some built-in sound cards can offer good audio quality. The choice between an audio interface and a sound card depends on the specific use case and budget.
| Characteristics | Values |
|---|---|
| Purpose | Audio interfaces are external devices that bring audio in and out of a computer, converting audio signals from a microphone or instrument into digital audio. Sound cards are built into computers and handle audio input and output. |
| Recording | Audio interfaces are particularly useful for recording due to their low latency. |
| Latency | Audio interfaces typically have lower latency than sound card drivers. |
| Volume | Audio interfaces may have more precise control over output levels, allowing for better mixing. |
| Compatibility | Audio interfaces are connected externally via USB or Thunderbolt, while sound cards are built into computers. |
| Flexibility | Audio interfaces offer more flexibility with inputs and can accommodate different types of microphones and instruments. |
| Preamps | Audio interfaces have microphone preamplifiers that amplify the microphone signal and control the gain, improving audio quality. |
| Converters | Audio interfaces use converters to convert analog audio signals to digital information and vice versa. Different interfaces use different converters, resulting in varying audio qualities. |
| Drivers | Both audio interfaces and sound cards rely on drivers for optimal performance. ASIO drivers are commonly mentioned for both. |
| Cost | Audio interfaces can range from budget-friendly to high-end options, while it is advised not to buy a sound card that is too cheap. |
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What You'll Learn
Audio interfaces are external, sound cards are internal
Audio interfaces and sound cards are both used for audio applications. However, a key difference between the two is that audio interfaces are typically external devices, while sound cards are internal.
An audio interface is an external hardware device that connects microphones and other audio equipment to a computer. It converts analog signals from audio equipment into digital audio information that can be processed by the computer. This process also works in reverse, with the audio interface converting digital audio from the computer into an analog signal that can be heard through speakers or headphones. Audio interfaces typically connect to a computer via Thunderbolt, USB, FireWire, or a special PCI/PCIe card. They are commonly used in professional audio applications, such as recording and music composition, where they offer advantages such as low latency and high track counts.
On the other hand, a sound card is an internal expansion card that provides input and output of audio signals to and from a computer. Sound cards are typically integrated into the motherboard of a computer, and they may have internal or external connectors. Consumer-grade sound cards are designed for generic home, office, and entertainment use, with an emphasis on playback rather than professional recording. They often have limited sampling rates, bit depths, and input channels compared to audio interfaces.
While sound cards are internal, it is worth noting that there are also external sound cards available, usually in the form of USB, FireWire, or PC Card interfaces. These external sound cards are often used by DJs, electronic musicians, and gamers for their convenience and improved fidelity.
In summary, while sound cards are typically internal and integrated into the motherboard, audio interfaces are external devices that provide a dedicated and high-quality connection for audio equipment, offering advantages such as low latency and improved input/output configurations for professional audio applications.
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Audio interfaces offer more control
Audio interfaces have a microphone preamplifier, or a mic preamp, which amplifies your microphone signal. The amount of amplification is controlled by the gain, which is normally a control on the interface itself. Different interface preamps will sound different and can offer different amounts of amplification and overall audio quality.
Additionally, audio interfaces have a means of controlling the output level beyond that of the system mixer. This means that even if you set the system mixer for full output, an interface may have a secondary means to control the actual output level, such as a front panel knob or a driver application.
Audio interfaces also offer more connectivity options for different types of microphones and instruments. The three most common styles of microphones are dynamic, condenser, and ribbon mics, which capture sound in different ways and have different characteristics. Audio interfaces are specifically designed to bring high-quality audio in and out of your device, so you can expect improved audio quality compared to built-in sound cards.
Furthermore, audio interfaces can provide lower latency than software drivers, which is important for recording. They can also offer clarity at both very low and very high volumes, with less interference than built-in sound cards.
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Audio interfaces are better for recording
Audio interfaces are external devices that can be connected to computers through USB or Thunderbolt. They are designed to improve the audio quality of the device they are connected to. Audio interfaces are particularly useful for recording due to their ability to handle latency effectively. Latency refers to the time delay between when a sound is produced and when it is heard through speakers or headphones. External audio interfaces typically exhibit much lower latency than software drivers, making them ideal for recording music or audio.
Audio interfaces offer several advantages over built-in sound cards for recording purposes. Firstly, they provide improved audio clarity, especially at very low and very high volumes. This is crucial for maintaining sound quality during the recording process. Additionally, audio interfaces have lower interference or noise compared to built-in sound cards, resulting in cleaner recordings.
Another benefit of audio interfaces is their support for various input styles. They typically include microphone preamplifiers, or mic preamps, which amplify the microphone signal to an optimal level. Different interfaces offer varying amounts of amplification and audio quality, allowing users to choose the best option for their specific recording needs. Audio interfaces also accommodate different types of microphones, such as dynamic, condenser, and ribbon mics, each with unique sound capture characteristics.
For musicians, audio interfaces provide instrument inputs, often referred to as Hi-Z or D.I. inputs. These inputs enable proper recording of instruments like guitars or basses. Audio interfaces also offer control over output levels, allowing users to fine-tune the actual output beyond the system mixer settings. This level of control ensures that recordings are neither distorted nor too quiet.
In summary, audio interfaces are superior to sound cards for recording due to their ability to handle latency, provide improved audio clarity and reduced interference, support various input styles, and offer precise control over output levels. These features make audio interfaces a preferred choice for anyone seeking to capture high-quality audio recordings.
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Sound cards are improving
However, sound cards are still improving and remain a good option for those who require a professional solution. For example, external sound cards can provide significantly lower latency, which is important for recording. They also have higher-quality components, which means things will sound "'clearer' with a noticeable increase in SNR. The audio components are separated from the rest of the board, eliminating interference from other components.
Quality control has also improved, and you are less likely to encounter issues with bad isolation or underlying design flaws. Sound cards are also becoming cheaper and more accessible, with some good audio interfaces available for less than 100 EUR.
Sound cards can also improve the quality of sound, particularly for audiophiles or those working with music. For example, the Asus Xonar sound card is often recommended for its ability to improve sound clarity, especially when using headphones.
Overall, while sound cards may not be as prevalent as they once were, they continue to improve and remain a valuable option for specific use cases.
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Latency is important
When recording audio, lower latency is generally preferred as it minimises the delay and provides a more immediate and responsive experience. This is especially important for singers or live speech, where a noticeable gap can be disturbing and cause issues with performance. For example, a podcaster may trip over their own words due to the latency, which can be detrimental to their show.
The audio interface plays a crucial role in influencing overall latency. Some interfaces have longer processing times than others, so it is essential to choose an interface with the lowest possible latency. Additionally, the type of driver used can impact latency, with ASIO drivers enabling smaller buffer sizes and thus reducing latency.
It is worth noting that some individuals are more sensitive to latency than others, so it is generally recommended to optimise your system for the lowest possible latency. This can be achieved by ensuring your hardware and software are up to date, as well as adjusting buffer sizes and utilising specific drivers designed to minimise latency.
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Frequently asked questions
An audio interface is an external sound card that brings audio in and out of your computer. It takes an audio signal from a microphone or instrument, converts it into digital audio, and then converts it back into audio that can be heard.
A sound card is another name for an audio interface. They are traditionally built into a computer.
Audio interfaces have more inputs and outputs, dedicated preamps, and produce higher quality audio. They also have lower latency and are less susceptible to noise.
Audio interfaces can be more expensive and may have issues with headroom and driver support.
