Modern users often need to output high-quality audio from their computer to an external device, such as a Bluetooth speaker, smart speakers, or simply a smartphone to use as a wireless headset or amplifier. Standard AUX cables are often inconvenient, and wires restrict freedom of movement, so wireless audio transmission is becoming a priority solution. WiFi technology enables a stable, high-bandwidth connection, which is critical for transmitting audio without compression or latency.
There are several proven methods for accomplishing this, each with its own advantages and limitations. Some methods require installing specialized software on both devices, while others utilize built-in operating system features. In this article, we'll cover in detail how to set up streaming, which programs to use to minimize lag, and how to achieve the best sound quality.
Keep in mind that the success of this operation directly depends on the quality of your local network. If the router is overloaded or the signal is weak, even the best software won't be able to provide clear, uninterrupted audio. Therefore, before beginning setup, make sure both devices are on the same subnet and have a stable connection.
⚠️ Attention: When using audio compression methods to reduce latency, audio quality may degrade slightly. For music tracks, this is almost unnoticeable, but audiophiles may notice a loss of detail in high frequencies.
Using specialized streaming software
The most flexible and customizable option is to use third-party applications designed specifically for streaming media content over the network. The program has been the leader in this field for many years. SoundWire, which allows you to turn your Android smartphone into wireless speakers for your PC. The principle is simple: the server component is installed on the computer, and the client component is installed on the phone.
After installing and launching the apps on both devices, you need to enter the computer's IP address in the mobile client's settings field. The program usually automatically finds the server on the local network, but manual entry guarantees a connection even in complex network configurations. It's important to note that SoundWire It uses compression algorithms to minimize latency, making it ideal not only for music but also for dubbing videos.
Another popular solution is a bundle AudioRelay And Wo MicThese apps offer a more modern interface and support for high-quality codecs. They allow you to stream system and microphone audio, opening up the possibility of using your phone as a headset for gaming or making PC calls.
- 📱 SoundWire: A classic solution with minimal latency and support for older versions of Android.
- 🎧 AudioRelay: modern interface, support for FLAC codecs and the ability to work over the Internet.
- 🎙️ Wo Mic: specializes in transmitting microphone audio, but can also broadcast system audio.
- 🔊 AirDroid: A multifunctional tool that includes a sound mirroring module.
When choosing a program, pay attention to its support for your operating system. Some applications may require root access for full functionality, although most modern solutions work in standard mode. It's also worth checking whether your antivirus or firewall blocks incoming connections for these programs.
⚠️ Attention: App interfaces and functionality may be updated by developers. If you don't see this button, check your settings or update the app to the latest version in the official store.
DLNA setup and media streaming
If your goal is not to broadcast system audio in real time, but to play music files stored on your computer, then the technology DLNA (Digital Living Network Alliance) is ideal. This standard is built into most modern operating systems and televisions, allowing devices to exchange media content without the need for additional, heavy software.
In Windows, this feature is called "Media Streaming." To activate it, open the Control Panel, find the appropriate section, and enable it. Afterward, your computer will become visible to other devices on the network, such as Android or iOS smartphones (via compatible players).
On the phone side, you'll need a player app that supports DLNA/UPnP. Great examples include VLC for Mobile, BubbleUPnP Or the standard Xiaomi player. In the playback menu, select the "Local Network" or "DLNA" source, and you'll see a list of available folders on your computer.
| Parameter | Description | Recommended value |
|---|---|---|
| Protocol | Network transmission protocol | DLNA / UPnP |
| Audio codec | File compression format | MP3, FLAC, AAC |
| Bitrate | Stream quality | 320 kbps and higher |
| Net | Connection type | WiFi 5 GHz |
The main advantage of DLNA is that the audio is decoded directly on the phone, with the computer acting only as a storage device. This relieves the load on the PC's processor and allows the phone to be used autonomously, even if the computer goes into sleep mode (provided the power settings are configured appropriately).
Why is DLNA not suitable for gaming?
DLNA is a file transfer protocol, not a real-time audio streaming protocol. It buffers data, so latency can be several seconds, making it impossible to synchronize audio with video in games or videos.
Stream via AirPlay and the Apple ecosystem
For Apple device owners, the issue of sound transmission is resolved natively through technology AirPlayHowever, if you have a Windows PC and an iPhone, things get more interesting. You can stream audio from your computer to your iPhone using third-party receivers that emulate an AirPlay receiver.
One of such solutions is the program TuneAero or using web versions of services that support AirPlay. After installing the emulator on your PC, your computer will appear in the iPhone's audio output device list, or vice versa, depending on the streaming direction. In the context of streaming from computer to phone, the reverse logic is more often used: the phone becomes a receiver for the PC through special utilities.
If the task is to transmit sound from Mac to iPhone, simply open Control Center on your Mac, select "Audio Output," and select your iPhone. This will ensure the highest possible transfer quality, as Apple hardware encoding is used.
- 🍏 Native support: AirPlay is built into macOS and iOS, requiring no drivers.
- 🪟 Windows emulation: requires installation of additional software to receive the signal.
- 🎵 Quality: Lossless transmission in the Apple ecosystem.
- 📶 Requirements: WiFi speed is critical, it is advisable to use the 5 GHz band.
It's important to understand that AirPlay uses buffering for stability, so a slight delay (about 2 seconds) is normal for this protocol. While this isn't critical for listening to music, it may require adjusting the latency in your player to ensure synchronization with video.
Local server organization and web interfaces
For advanced users who want full control over the process, deploying your own media server is a great option. Programs like Plex, Jellyfin or Emby allow you to organize a powerful multimedia library on your computer and stream it to your phone via a browser or native app.
Although these services are primarily focused on video, they handle audio content very well too. You can create a playlist on your computer and play it on your phone. A unique feature is that the server can transcode audio on the fly, changing the format or bitrate to suit the network.
Setting up such a server takes time, but it offers unique features: access to music from anywhere in the world (not just via home WiFi), automatic download of metadata, album art, and lyrics. This turns your computer into a fully-fledged personal streaming service.
☑️ Streaming Readiness Check
It's worth noting that for these servers to operate, the computer must be turned on and have internet access for initial setup and metadata retrieval. Local data transfer is direct, bypassing the developer's cloud servers, ensuring high speed.
Solving latency and audio quality issues
The most common problem with transmitting audio over WiFi is audio and video desynchronization or stream interruptions. Latency occurs due to the time required for encoding, network transmission, buffering, and decoding of the signal. There are several ways to minimize it.
First of all, go to the range 5 GHzThe 2.4 GHz frequency is often overloaded by neighboring routers and household appliances, causing packet dropouts and data loss. 5 GHz provides a wider channel and less interference. It's also recommended to move the computer and router closer together or use a wired connection for the PC.
Streaming apps often offer a balance between quality and speed in their settings. For gaming, choose "Low Latency" or "Game Mode," which sacrifices bitrate for responsiveness. For music, on the other hand, choose "High Quality" mode.
⚠️ Attention: Antivirus programs may block local traffic between your computer and phone, considering it suspicious. If you're having connection issues, add the streaming app to your firewall exceptions.
Using your phone as a microphone for your PC
The opposite situation, when a phone is used not as a speaker, but as a sound source (microphone) for a computer via WiFi, deserves special attention. This is especially true for video conferencing, streaming, or podcast recording, when the laptop's built-in microphone is of poor quality.
Apps like WO Mic or IP Webcam (in audio mode) allow you to stream audio from your smartphone's microphone to your PC. The computer sees the phone as a standard recording device. This allows you to use the high-quality microphones of modern flagship phones for computer work.
Setup is similar to transferring audio to a phone: install the client on the PC, the server on the phone, and connect via IP address. The advantage of WiFi over Bluetooth in this case is its greater range and the ability to use the phone without being tied to a Bluetooth proximity zone.
Thus, transmitting audio between a computer and a phone via WiFi is a powerful tool that, when properly configured, can replace expensive audio equipment. The choice of a specific method depends on your needs: DLNA or streaming servers are best for music, while specialized software like SoundWire is better for games and real-time video.
Is it possible to transmit sound without installing programs on a computer?
Fully streaming system audio without any server software on your computer is impossible, as the OS doesn't have a built-in "sending audio over the network" feature for general purposes. However, if you use DLNA, you only need to enable the standard "Media Streaming" feature in Windows in Control Panel, without installing any third-party software.
Why does the sound cut out when transmitting via WiFi?
The main cause of interruptions is an unstable connection or channel congestion. This can be caused by a weak router signal, other devices on the network, using the 2.4 GHz frequency in an apartment building, or insufficient phone processor processing power when decoding high bitrates.
Does audio transmission affect internet speed?
When transferring files over a local network (DLNA), the internet is not used at all; the traffic is handled internally by the router. Using cloud services or streaming over the internet (not over a local network) does consume bandwidth, but for audio, it's minimal (usually up to 320 kbps), which has virtually no impact on overall speed.
How to reduce sound lag in games?
To reduce latency, use apps with "Game Mode," connect your computer to the router via a cable, use the 5 GHz WiFi band, and disable background downloads. Lowering the audio quality in the streaming app settings also helps.