TB+ WSDR - Sound-Bugs TOP-BAND+ WebSDR - Bugs Affecting Sound

This sub-section of the bugs list gives information about how to fix some sound issues.

The workarounds here have been reported by several listeners to be effective . However, you use these suggestions at your own risk.

(1) Since mid March 2019: after Chrome updates - No WebSDR Sound (yet again! see also bug (4) below):

ACKNOWLEDGEMENT: Many thanks to G4NNX who first reported this problem

SYMPTOMS: No sound when arriving on specific WebSDR(s)

CAUSE: The latest Chrome update. Almost certainly Chrome has auto-updated to the latest version and has reset your site specific sound to Automatic (default)

SOLUTION (if you don't want to abandon Chrome yet):
(a) browse to the problem WebSDR Address
(b) click the 'i' symbol to the left of the address box (it may say 'not secure' if not an https address)
(c) click the sound drop-down
(d) the default is 'automatic', you need to select 'allow' - this permits the websdr to send you sound

(2) Late October 2018; No WebSDR Sound on Safari in MacOS Mojave:

ACKNOWLEDGEMENT: Many thanks to G0IFS who first reported this problem and provided the workaround

SYMPTOMS: No sound when arriving on any WebSDR where HTML 5 sound is selected

CAUSE: You may have recently updated Mojave but haven't enabled the sound 'auto-play' option

WORKAROUND: click on Safari, click on 'Settings for this website' then select 'Allow all auto play'

(3) Mid Sept 2018; Loud White Noise when using Chrome browser:

UPDATE 04/12/2018 I can confirm that this bug has been fixed in the latest stable 71.0.3578

UPDATE 07/10/2018: I can confirm that this bug is not present in Chrome Canary - Version 71.0.3572.0 (Official Build) canary (64-bit). You can download it from here if you can't wait for the next stable update. Be aware that Canary is a developers release and CAN BE BUGGY.

UPDATE 29/09/2018: the Chromium development team have acknowledged this problem and the change that introduced the bug will be reversed in a future update. More info here

ACKNOWLEDGEMENT: Many thanks to PA3FWM who first reported this problem on WebSDR.org and suggested the workaround

SYMPTOMS: Sound is blotted out by white noise when arriving on any WebSDR or when subsequently changing mode or bandwidth.

CAUSE: The latest Chrome update. Almost certainly Chrome has auto-updated to the latest version where the specification for buffers has been changed. This is no longer compatible with any current WebSDR server. Pieter PA3FWM (and others) have raised this with the Chrome developers here but it seems uncetrain whether they will reverse the change. If not, Pieter will have to decide whether he modifies the server code. There is NOTHING any of the WebSDR sysops can do to fix this. In the mean time the following SOLUTION or WORKAROUND may help you:

SOLUTION: Abandon Chrome. Many alternatives are compatible with WebSDR's including Firefox, Edge, Vivaldi (v1.15) and Safari. I have checked each of these and they are currently fine. Note: Vivaldi is Chromium based and v2 has inherited this bug, so if you have v1.15 or earlier; don't update!

If you can't bear the thought of changing your browser, the following workaround may work for you (until the next forced update)

WORKAROUND FOR CHROME:
(a) mute then unmute the WebSDR sound using the SDR mute button (not your computer mute button nor Windows mute)
(b) you will need to do this every time you have the problem!!

(4) No WebSDR Sound in Chrome:

ACKNOWLEDGEMENT: Many thanks to G0SXY who first reported this problem and provided the workaround

SYMPTOMS: No sound when arriving on any WebSDR where HTML 5 sound is selected

CAUSE: This is probably because Chrome has updated to version 66.0.3359.139 where the default setting requires a "user gesture" to play sound "for cross origin iframes"

WORKAROUND:
(a) browse to chrome://flags/#autoplay-policy
(b) select no user gesture is required in the Autoplay Policy drop-down menu
(c) close and restart Chrome to enable new settings


(5) No WebSDR Sound in When Using Java Version 8. 0.45 or Later:

Note (a): Internet Explorer still supports Java but recent versions of many other browsers DO NOT (Edge, Chrome, Firefox). You must use HTML on these!!
Note (b): For earlier Java versions please check http://www.websdr.org/java.html for a possible solution
Note (c): This bug does not affect HTML Sound

ACKNOWLEDGEMENT: Many thanks to the sysops at Hack Green WebSDR who reported this problem and posted the workaround

SYMPTOMS: No sound when arriving on any WebSDR where JAVA sound is selected

CAUSE: This is probably because Java has been updated to version version 8. 0.45 (or later), where the new default setting prevents the WebSDR sound applet from working.

WORKAROUND: please click Java 8.0.45 workaround