Neutron Audio Recorder

Neutron Code Limited

About this app

Neutron Audio Recorder is a high-resolution audio recorder for mobile devices and PCs, powered by a 32/64-bit, OS and platform independent Neutron HiFi audio engine that bypasses standard OS audio limitations. Enjoy bit-perfect recording through USB ADCs and external audio interfaces, with a full DSP suite that can be applied to the recording itself or to playback only. Save to internal, external, or network storage in lossless or compressed formats (WAV, FLAC, OGG/Vorbis, Speex, MP3).

Built for voice recording, field recording, musicians and anyone who demands high-fidelity audio and full control over their recordings.

HI-RES RECORDING & ADC SUPPORT
• 32/64-bit HD audio processing, well known to Neutron Music Player users
• OS and platform independent encoding and audio processing
• Bit-perfect recording
• Direct USB ADC / external audio interface input via USB OTG (up to 8 channels, 32-bit, 1.536 MHz)
• Real-time signal monitoring mode
• High-quality real-time optional resampling (Quality and Audiophile modes), reduces file size without sacrificing quality, ideal for voice recordings

FORMATS
• High-resolution lossless: WAV (PCM, A-Law, U-Law), FLAC
• Space-saving compressed: OGG/Vorbis, MP3, Speex, WAV-ADPCM

DSP & AUDIO PROCESSING
• Two DSP modes for all effects: apply DSP to the Recording session (recorded sound is source + DSP) or to the Playback session (recording stays original, DSP is applied in real time to the playback sound)
• Parametric equalizer (PEQ): 4-130 bands, per channel, with fully configurable type, frequency, Q and gain
• Configurable digital filters for sound correction
• Automatic Gain Control (AGC) to boost faint or distant sounds
• Silence Detector: skips quiet sections during recording or playback to save storage
• Compressor / Limiter
• Dithering to minimize quantization error
• Real-time spectrum, waveform and RMS analyzers

NETWORK, STORAGE & BACKUP
• Record to internal or external storage
• Record directly to network storage in real time: SMB/CIFS (NAS or PC, Samba) and SFTP (SSH)
• Play recordings to Chromecast, UPnP/DLNA renderers and network speakers
• Manage your local media library through the internal FTP server
• Share recorded files with other installed apps

LIBRARY & PLAYBACK
• Media library grouped by album, artist, genre, year and folder
• Folder mode and bookmarks
• Playlists: M3U, with full playlist management
• Tag and metadata editing for recorded files
• Playback modes: Shuffle, Loop, Single Track, Sequential, Queue
• Profiles (multiple configurations) for instant workflow switching
• Programmable start and stop recording timers
• Multi-language interface
• Android Auto for playing recordings in a car

TRY BEFORE YOU BUY
Test hardware compatibility and features using the free 5-day evaluation version.

SUPPORT & COMMUNITY
Get specifications, technical help, report issues or discuss features on the official website and forum, or report bugs directly by e-mail.

Ratings and reviews

Audio recorder works fine, even above expectations. Unfortunately, there are problems with access to recorded files - you could not copy them or transfer. Instructions given on other comments does not work (could be that are too complicated). That problems are the only reason why I have requested for refund.

It is a very powerful audio recorder but trying to get the recording from the app to anywhere else is a nightmare. FTP and sharing to another app were useless. I searched the file directories in my phone (both hidden and not) and could not find it. Some people don't have this problem according to the forums but this was a big waste of time for me.

Powerful, but unintuitive UI and, unreliability keeps the app from potential greatness. Features and customization level: AMAZING. However, it's difficult to make sense of the interface. For example, many reviews complain about inability to export recordings. Adding a directory under the "sources" setting changes the target write dir. Also, preamp/EQ settings revert to a default after pressing REC. And, just now 90 minutes of recordings—yes, clock was rolling—have just simply disappeared.

What’s new

* New:
- 130-band PEQ DSP
* AudioTrack hi-res driver support for Android 17
* Improve compatibility with some UDB DACs which do not support GET current frequency request
* Increase UI → Theme → Font Size max to 150
! Fix:
- do not show [+ Folder] for network sources