When using a smartphone for filmmaking, you enjoy much greater mobility than a traditional film crew. However, wired microphones can limit this advantage, as they tether you to your device with cables that restrict both your movement and that of your subject. The solution is a wireless microphone for smartphone, which offers freedom by using a transmitter and receiver. In this article, we’ll guide you through six steps to effectively use a wireless microphone for your smartphone to achieve great audio quality.
Choose an external wireless microphone for smartphone suitable for your recording
The type of microphone, sound quality, compatibility, battery life, and transmission range are key factors in determining the best wireless microphone for smartphone. Next, we will guide you through each important aspect.
Decide the type based on your project
It’s crucial to pick the right type of smartphone microphone based on your project’s needs. Wireless lavalier microphone for smartphone, with a transmitter clipped to the user’s clothing and a receiver attached to the recording device, offers excellent mobility and is perfect for interviews, presentations, and live performances. Handheld versions provide flexibility and control, making them ideal for musical performances or public speaking. Additionally, headset mics, worn on the head to stay close to the mouth, are great for presentations or hands-free activities. Understanding the strengths of each type—lavalier for discreet audio capture, handheld for versatility, and headset for convenience—will help you choose the best option for your video projects.
Evaluate audio quality based on real-world performance
When selecting a wireless microphone for smartphone, the most critical factor is the audio quality it provides. Evaluating audio quality based on specifications alone can be misleading, as these often do not accurately reflect the system’s real-world performance. Specifications such as frequency range are frequently included for marketing purposes and may not be indicative of sound quality. Instead of focusing on specs, consider checking video reviews or listening to audio samples to gauge how the system performs in practical use. When purchasing a wireless microphone system, prioritize options that offer natural and accurate sound reproduction.
Choose the right connectivity for your Android or iOS smartphone
Wireless microphones offer various connection options. Typically, these systems include a receiver and a transmitter that communicate over a 2.4GHz frequency, providing superior range and quality compared to Bluetooth. When selecting a system, consider how the receiver will connect to your camera or other devices. Many receivers use a 3.5mm connection, but some feature USB-C ports, which are more compatible with newer devices like smartphones and laptops.
Consider battery life for extended use
When choosing a wireless microphone system, battery life is a key factor. Most systems provide between 5 and 7 hours of use, which is generally sufficient for most recording sessions but might not cover an entire day of shooting. Microphones utilize different methods for power supply: some systems use replaceable batteries, while others are easily rechargeable via USB-C. Additionally, some models can be powered during recording, avoiding concerns about battery depletion. This power is typically supplied through USB-C or a hot shoe connection on the camera.
Choose the ideal transmission range for your project
When selecting a wireless microphone for smartphone video recording, the transmission range is a crucial factor to consider, as it directly impacts how far you can position your audio equipment from your recording device. Systems using a 2.4GHz connection typically offer at least 50 meters of range, which works well for most recording scenarios. However, advanced systems can extend up to 200 meters, making them ideal for situations where you need to capture audio from greater distances or separate locations.
Connect wireless microphone receiver to smartphone
How to connect wireless microphone to smartphone? The method varies based on the type of port it features. Whether your phone uses a USB-C, Lightning port, or a 3.5mm jack, each option provides a simple way to improve your audio quality. Here’s how to connect your mic depending on your device's connection type.
When your smartphone has a USB-C or Lightning port
As more smartphones move away from using 3.5mm audio jacks, the easiest way to connect a microphone is through the USB-C or Lightning port. You can do this in two ways: use a microphone with a USB-C or Lightning output, or connect a 3.5mm mic with an adapter.
For the first option, it's super simple to use wireless microphone for Android smartphone or iOS. Just plug the mic into your smartphone, and it will automatically replace the phone's built-in mic, giving you much better sound quality right away. SYNCO offers several wireless microphones that connect directly to smartphones this way, such as the SYNCO PX Lineup.
When your smartphone has a 3.5mm jack
If your smartphone still has a 3.5mm headphone jack, you can use any microphone with a 3.5mm output and a TRRS cable. Since most smartphones have a TRRS port, make sure your mic has a matching connector, or use a TRS to TRRS adapter for a proper fit.
Position and secure wireless microphone for smartphone properly to capture clear audio
The placement and stabilization of your wireless microphone significantly impact its audio quality. Ensure that the microphone is positioned close to the sound source without being so close that it leads to distortion or popping sounds. Avoid placing it near clothing or accessories that might rub against it, as this can create unwanted noise. Use clips, tape, or mounts to keep the microphone in place, and conceal any wires or transmitters under clothing or out of sight.
Optimize recording environment to avoid unwanted sounds
Achieving high-quality audio recordings on a smartphone relies significantly on your recording environment. To minimize the need for multiple takes caused by external distractions or background noise, it’s essential to optimize your surroundings.
Improving your recording space may involve the following steps:
- Disconnecting noise sources like air conditioners and refrigerators.
- Soundproofing your recording area.
- Selecting a quiet outdoor location for filming.
- Reducing excessive ambient noise in the recording space.
- Using a windscreen or pop filter on external microphones.
Monitor the audio quality and battery life of wireless smartphone microphone
Even after selecting the appropriate type and frequency for your wireless microphone, it’s crucial to monitor both the audio quality and battery status while filming. Using headphones or earbuds allows you to listen to the audio output in real-time, so you can adjust volume and gain settings as necessary. Additionally, keep an eye on a battery meter or indicator to assess the microphone’s battery level. Be sure to replace or recharge the batteries before they deplete, as low battery levels can lead to noise, dropouts, or signal loss.
Use a backup audio if needed for reliability
Even with all the best practices in place for using a wireless microphone for smartphone, unexpected issues can still arise that may compromise your audio quality. Problems like interference from other devices, signal loss due to distance or obstacles, or a malfunctioning microphone can occur. To prevent losing your audio entirely, it's wise to have a backup audio source on hand. Options such as a wired microphone, a shotgun microphone, or an external recorder can serve as reliable alternatives. In post-production, you can sync the audio from your backup source with your video, allowing you to select the best audio for your final product.