Stereo Tool

Stereo Tool 9.90 has been released! We have also updated the MicroMPX SD card image for the Pi (which had not yet been updated for some of the recent MicroMPX updates).

Changes:

• Added Bass Exciter.
• Added Highs Exciter.
• AGC: Matrix mode: Added relative threshold per band, allowing more stereo widening for certain bands.
• Clipper Multipath Stereo: Didn't work properly for values > 90 degrees. And split the settings for FM and streaming.
• Streaming: Added stereo reduction filter to improve streaming audio quality at lower bitrates.
• Streaming: Updated IceCast libShout from 2.4.1 to 2.4.5.
• AES67: Added LiveWire+ channel detection.
• AES67: Multiple instances can read AES67 now.
• AES67: Support on Linux and Mac added.
• Added L-R Phase shift filter. This tends to sound warmer and wider, and more natural on extremely panned music.
• Big rewrite of the parameter handling code.
• RDS parser: Ignore weird characters at start of included Unicode files (UTF-8, UTF-16, UTF-32).
• I/O settings: Simplified settings, for example ASIO is now enabled if you select it in any output and does not have its own on/off anymore.
• Bug fix: Stereo Image bad a bug that caused audio to be smeared out in time. Must have been there for years.
• Bug fix: Lowpass filter difference mode did not work.
• Bug fix: Multibands with very large negative Density values sounded strange.
• Bug fix: Entering \+64 - \+99 for RT+ could cause crashes.
• Bug fix: Lowpass filter was partially enabled in Bypass mode for non-FM outputs.
• Bug fix: BIMP: Disabling Input 2 didn't disable The BIMP! So it kept processing and adding audio.
• Bug fix: BS412 in low latency modes used an extreme amount of CPU.
• Bug fix: ASIO on input 2 with very low block sizes with non-ASIO on input 2 could cause the ASIO code to incorrectly complain about unresponsiveness.
• GUI: Replaced "blocking" checkboxes by a single checkbox under Configuration.
• GUI: Advanced RDS now only set for UECP inputs, if you select Advanced features yourself they will just be enabled.
• Reduced memory usage by about 200 MB
• JSON interface now supports some of the meters.
• Added and updated presets.
• ST-Enterprise: Added AES67 input.
• ST-Enterprise: Fixed synchronization of 2nd input.
• ST-Enterprise: Full I/O framework redesigned, now ready for release.
• STXtreme and new GUI: Inactive filters in top bar hidden.
• STXtreme: Added I/O settings to front panel.
• STXtreme: Warning about I/O speeds was accidentally shown on the font panel, now only in logging.
• Relay: Added support for sending AF frequencies.
• MicroMPX: Added version number to web interface.
• MicroMPX: Bug fix: Compiler bug caused weird audio glitches in the 64 bit ARM build.
• MicroMPX: Added baudrate setting for GPS NMEA input.
• MicroMPX library: Added pilot and RDS level info.
• MicroMPX library: Added mono only mode (upto 15 kHz, requires at least version 4.1.3 on both ends) for a specific customer.
• MicroMPX decoder library: Added estimated sample number in sync mode to match time stamps with ancillary data.
• MicroMPX decoder library: Added audio demodulator.
• MicroMPX decoder library: Allow bigger delay (upto 15 seconds instead of 9).
• MicroMPX encoder library: Replaced NIC index (which pointed back to ParSet) by NIC string.
• MicroMPX: Bug fix: Minor offset in pilot/RDS levels due to rounding error (worst case was a 0.07 dB difference, that's now 0.03 dB).
• MicroMPX: Bug fix: RDS signal could have an offset of a few µs after demodulation.
• MicroMPX: Bug fix: Reading huge log files in the web interface could block the web interface.
• MicroMPX: Reduce maximum speed adjustment when detecting clock speed problems; large adjustments can affect stereo/rds reception.

as of my comment date and time:
im sure you are aware https://www.stereotool.com/download/
still says "Latest version: Stereo Tool 9.83"
though the actual download is 9.90.

Try here: https://www.thimeo.com/stereo-tool/download/

Bug: When load Studio One and Hello NINE presets (Bojcha) in Web/DAB/HD Radio Presets section the FM Transmitter is enabled.

_________________
https://fmfeeling.com

9.90 64bit stand alone - "Aggressiveness" slider under "Density" disappeared - affects both analog and digital MB1.

Hi Hans,

Thank you for this latest release

I wonder if you can advise me on the following:

I see that you have added, 'Highs Exciter' and 'Bass Exciter' in this new release.

I have enabled both of these new settings, but when I press the 'Difference' button, on the
'Bass Exciter' it only shows a 'flat line' on the 'Output' waveform graph.

When I do the same for the 'Highs Exciter' the waveform then shows the
difference i.e. it is oscillating up and down.

Therefore, is there another setting that you know of, which may be effecting
the 'Bass Exciter' from working which I may have inadvertently turned on?

Please see below for screenshots.

Thanks in advance
Mark

Is speech detection on? Try lowering the "Reduce Bass Exciter for Speech by" % slider.

Hi MrKlorox,

Thank you for your reply.

I do indeed have speech detection ON.

I have tried lowering the % slider, but still nothing happens.

I've also turn speech detection OFF, but unfortunately that did not work either.

I'm guessing there must be a setting somewhere that is effecting
it, but for me it's like trying to find a needle in a haystack, to find the
right one.

The only thing I can do is randomly turn off various setting to hopefully
stubble upon the one that is effecting it. Unless yourself or anyone else
has any other possible suggestions on where to look.

Regards
Mark

At one point I thought I noticed a difference in sound when switching between different output types for a sound-device (possibly MME and Kernel Streaming)? Didn't investigate this properly though, so not sure what this was about...