In late August, we launched the private beta program of our advanced audio algorithm parameters. After feedback by our users and many new experiments, we are proud to release a complete rework of the Adaptive Leveler parameters:

In the previous version, we based our Adaptive Leveler parameters on the Loudness Range descriptor (LRA), which is included in the EBU R128 specification.
Although it worked, it turned out that it is very difficult to set a loudness range target for diverse audio content, which does include speech, background sounds, music parts, etc. The results were not predictable and ...

Large file uploads in a web browser are problematic, even in 2018. If working with a poor network connection, uploads can fail and have to be retried from the start.

At Auphonic, our users have to upload large audio and video files, or multiple media files when creating a multitrack production. To minimize any potential issues, we integrated various external services which are specialized for large file transfers, like FTP, SFTP, Dropbox, Google Drive, S3, etc.

To further minimize issues, as of today we have also released resumable and chunked direct file uploads in the web browser to ...

In a previous blogpost we talked about the Opus codec, which offers very low bitrates. Another codec seeking to achieve even lower bitrates is Codec 2.

Codec 2 is designed for use with speech only, and although the bitrates are impressive the results aren’t as clear as Opus, as you can hear in the following audio examples. However, there is some interesting work being done with Codec 2 in combination with neural network (WaveNets) that is yielding great results.

Layers of a WaveNet neural network.

Background

Codec 2 is an open source codec designed for ...

Today we released free updates for the Auphonic Leveler Batch Processor and the Auphonic Multitrack Processor with many algorithm improvements and bug fixes for Mac and Windows.

Changelog

• Linear Filtering Algorithms to avoid Asymmetric Waveforms:
  New zero-phase Adaptive Filtering Algorithms to avoid asymmetric waveforms.
  In asymmetric waveforms, the positive and negative amplitude values are disproportionate - please see Asymmetric Waveforms: Should You Be Concerned?.
  Asymmetrical waveforms are quite natural and not necessarily a problem. They are particularly common on recordings of speech, vocals and can be caused by low-end filtering. However, they limit the amount of gain that can ...

Today we released an update of the free Auphonic Edit Android app. It includes support for external storage devices, a new tablet layout, mouse support and much more.

Auphonic Edit is a non-destructive audio editor and recorder with focus on ease of use, high-quality audio and stability. In combination with the integrated Auphonic web service, you can post-process, encode, tag and publish your podcasts, interviews, music recordings on the go with a single click.

View Auphonic Edit in Play Store

Auphonic Edit 1.1 Changelog

• Support for External Storage Devices: now you can save your recordings on external USB drives ...

Auphonic allows you to add external services to distribute processed and encoded result files to many hosting/storage providers or to your own servers.
We released an interface to Amazon S3 four years ago, now we open our S3 interface also for other S3-compatible storage providers like Google Cloud Storage, DreamHost and many more. They provide affordable, reliable and high-performance podcast/media file hosting.

All supported storage providers can be used for incoming and outgoing file transfers to/from Auphonic.
In this blog post, we will first describe the setup of a Generic S3 Account, then the integration of ...

As of today a new update of the free Auphonic iOS Recorder is available in the App Store. It includes workflow improvements, some new features and many bug fixes:

View Auphonic Recorder in App Store

Recording (left) and Waveform (right) view of the Auphonic Recorder iOS app.

Changelog

• Improved recording interface: remaining disk space, format, etc. is displayed during recording.
• New recorder options menu: microphone and audio format selection, possibility to force mono recordings with stereo microphones.
• Usability improvements when importing audio from other iOS apps: we removed confusing/duplicated sharing options and fixed problems while decoding files from other ...

After a very long Apple review time, we are finally allowed to release version 1.0 of the all new, native and free Auphonic Recorder app for iOS:

View Auphonic Recorder in App Store

This app is a co-production with one of the best iOS developers out there: Martin Hering (Vemedio, Instacast, etc.). Many thanks Martin for your great work!

Recording (left) and Waveform (right) view of the Auphonic Recorder iOS app.

The focus of the Auphonic Recorder is robust and high-quality recording:
It is possible to choose between multiple microphones from your iPhone, an external USB interface, headsets, etc. and ...

Another year is coming to an end: time for Krampus and Nikolaus to rewards the well-behaved ones with gifts – and to fix some remaining bugs from 2015 in our desktop apps :) !
Today we release version 1.7 of the Auphonic Leveler Batch Processor and version 1.3 of the Auphonic Multitrack Processor.

A typical Krampus in Austria, image by Johann Jaritz.

• Auphonic Leveler Download
• Auphonic Multitrack Download

Changelog

This release is mainly a bug fix release.
It fixes ...

We are happy to release version 1.6 of the Auphonic Leveler Batch Processor and version 1.2 of the Auphonic Multitrack Processor with new features and bug fixes for Mac and Windows (see Changelog below).

• Auphonic Leveler Download
• Auphonic Multitrack Download

Changelog

• Opus Encoder and Decoder:
  We included an opus encoder and decoder in all apps. Opus is particularly interesting for podcasts due to its suitability for both, music and speech, and its outstanding sound quality at also very low bitrates. For more see Opus, the revolutionary open ...