Opto Acoustic Noise Canceling Headphones - Revision history

Melodie at 18:11, 12 January 2026

2026-01-12T18:11:26Z

← Older revision		Revision as of 18:11, 12 January 2026
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	~~Slim~~ over-the-ear headphones with an active noise cancellation (ANC) feature.		OptoACTIVE II slim, over-the-ear headphones with an active noise cancellation (ANC) feature.
	*[https://www.optoacoustics.com/medical/optoactive-ii Product Site]		*[https://www.optoacoustics.com/medical/optoactive-ii OptoAcoustics Product Site]

	=Setup=		=Setup=

Melodie: /* Issues With Audio */

2025-07-09T15:12:36Z

Issues With Audio

← Older revision		Revision as of 15:12, 9 July 2025
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	===Audio Through One Side of Headphones Only===		===Audio Through One Side of Headphones Only===
	*Check that the balance knob is not turned all the way to one side.		*Check that the balance knob is not turned all the way to one side.
	*~~Replace~~ the Line 1 In cable. This is the skinny black cable labelled Optoacostics that connects the box to your computer. Find a new aux cable in the control room cabinets (likely in the box labelled "AV Cables") and try using it.		*Turn off the box and leave it off for a few minutes. While waiting, replug the Line 1 In cable. This is the skinny black cable labelled Optoacostics that connects the box to your computer.
			*Replace the Line 1 In cable. Find a new aux cable in the control room cabinets (likely in the box labelled "AV Cables") and try using it.
	===Users in Control Room Cannot Hear Task Audio===		===Users in Control Room Cannot Hear Task Audio===
	*If your participant can hear the audio playing from your computer, but you cannot, first check the speaker knob at the top-right side of the box. Turn it up if it is low.		*If your participant can hear the audio playing from your computer, but you cannot, first check the speaker knob at the top-right side of the box. Turn it up if it is low.

Melodie: /* Issues With Audio */

2025-05-13T19:58:12Z

Issues With Audio

← Older revision		Revision as of 19:58, 13 May 2025
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	===No Task/Computer Audio Through Headphones===		===No Task/Computer Audio Through Headphones===
	*If your participant reports no audio from the computer you are playing it from, but can hear your voice as you speak to them, check the cable connections at the back of the Optoacoustics box. The skinny black cable (labelled "Optoacoustics", connects the box to your computer) should be plugged into the "Line 1 In" port.		*If your participant reports no audio from the computer you are playing it from, but can hear your voice as you speak to them, check the cable connections at the back of the Optoacoustics box. The skinny black cable (labelled "Optoacoustics", connects the box to your computer) should be plugged into the "Line 1 In" port.
			*Turn off the Optoacoustics box. Replug the skinny black cable (labelled "Optoacoustics") and the other, slightly thicker black cable to its left (the power cable).
			*Check that the two round, silver buttons on the main face of the box are both pushed in.
	*Check that your computer volume is turned up.		*Check that your computer volume is turned up.
	*Check that the volume knob on the box is turned up and the balance knob is in the middle.		*Check that the volume knob on the box is turned up and the balance knob is in the middle.

Melodie: /* Troubleshooting */

2024-06-21T23:29:24Z

Troubleshooting

← Older revision		Revision as of 23:29, 21 June 2024
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	=Troubleshooting=		=Troubleshooting=
	==Issues With ~~ANC~~==
			==Issues With Audio==
	===Unit Won't Turn On===		===Unit Won't Turn On===
	*This may happen if a group forgets to turn the system off at the end of their session and it stays on for a long time before finally being switched off. Turn the unit off and leave it off for some time, perhaps while you are setting up and registering your participant. Try pressing the switch again and repeat until it turns on. It may take a few cycles of switch flipping, but the unit has always come back on before long.		*This may happen if a group forgets to turn the system off at the end of their session and it stays on for a long time before finally being switched off. Turn the unit off and leave it off for some time, perhaps while you are setting up and registering your participant. Try pressing the switch again and repeat until it turns on. It may take a few cycles of switch flipping, but the unit has always come back on before long.
			===No Task/Computer Audio Through Headphones===
			*If your participant reports no audio from the computer you are playing it from, but can hear your voice as you speak to them, check the cable connections at the back of the Optoacoustics box. The skinny black cable (labelled "Optoacoustics", connects the box to your computer) should be plugged into the "Line 1 In" port.
			*Check that your computer volume is turned up.
			*Check that the volume knob on the box is turned up and the balance knob is in the middle.
			===Audio Through One Side of Headphones Only===
			*Check that the balance knob is not turned all the way to one side.
			*Replace the Line 1 In cable. This is the skinny black cable labelled Optoacostics that connects the box to your computer. Find a new aux cable in the control room cabinets (likely in the box labelled "AV Cables") and try using it.
			===Users in Control Room Cannot Hear Task Audio===
			*If your participant can hear the audio playing from your computer, but you cannot, first check the speaker knob at the top-right side of the box. Turn it up if it is low.
			*Press the circular button right below it. It should be lit green.
			*Replace the Line 1 In cable. See the section directly previous, as these problems sometimes occur together and can both be resolved with a new cable.

			==Issues With ANC==
	===Noise Cancellation Stops===		===Noise Cancellation Stops===
	*The most common reason that noise cancellation stops completely is because the stimulus presented is too loud and overshoots the safety threshold (111dB).		*The most common reason that noise cancellation stops completely is because the stimulus presented is too loud and overshoots the safety threshold (111dB).

Melodie: /* Noise Cancellation Fading */

2024-03-02T00:03:52Z

Noise Cancellation Fading

← Older revision		Revision as of 00:03, 2 March 2024
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	*Studies that run numerous functional tasks, or have sequences in between functional runs that don't use the ANC function, will notice that over time the algorithm used to produce the noise cancellation may fade and the quality of the noise cancellation will diminish.		*Studies that run numerous functional tasks, or have sequences in between functional runs that don't use the ANC function, will notice that over time the algorithm used to produce the noise cancellation may fade and the quality of the noise cancellation will diminish.
	*The most effective way to avoid this is adding another short learning sequence into your protocol.		*The most effective way to avoid this is adding another short learning sequence into your protocol.
	*Stopping the algorithm just before the end of your sequence and starting the algorithm again just after your next sequence starts up again has proven somewhat effective in keeping the ANC feature ~~in tact~~.		*Stopping the algorithm just before the end of your sequence and starting the algorithm again just after your next sequence starts up again has proven somewhat effective in keeping the ANC feature intact.

	===Audio Output is Unbalanced===		===Audio Output is Unbalanced===
	*Check the knob in the upper left corner of the back of the unit. Turn it until the dot at the top of the dial is lined up in the middle. The knob should always stay in this position, as it ensures that the audio will not be played in one ear more than the other.		*Check the knob in the upper left corner of the back of the unit. Turn it until the dot at the top of the dial is lined up in the middle. The knob should always stay in this position, as it ensures that the audio will not be played in one ear more than the other.

Melodie: /* Noise Cancellation Fading */

2024-03-02T00:03:20Z

Noise Cancellation Fading

← Older revision		Revision as of 00:03, 2 March 2024
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	'''Note: There is no need to adjust the 'Line 2' volume dial, it doesn't do anything to affect the sound unless you have two volume sources!'''		'''Note: There is no need to adjust the 'Line 2' volume dial, it doesn't do anything to affect the sound unless you have two volume sources!'''
	===Noise Cancellation Fading===		===Noise Cancellation Fading===
	*Studies that run numerous functional tasks, or have sequences in-between functional runs that don't use the ANC function, will notice that over time the algorithm used to produce the noise cancellation may fade and the quality of the noise cancellation will diminish.		*Studies that run numerous functional tasks, or have sequences in between functional runs that don't use the ANC function, will notice that over time the algorithm used to produce the noise cancellation may fade and the quality of the noise cancellation will diminish.
	*The most effective way to avoid this is adding another short learning sequence into your protocol.		*The most effective way to avoid this is adding another short learning sequence into your protocol.
	*Stopping the algorithm just before the end of your sequence and starting the algorithm again just after your next sequence starts up again has proven somewhat effective in keeping the ANC feature in tact.		*Stopping the algorithm just before the end of your sequence and starting the algorithm again just after your next sequence starts up again has proven somewhat effective in keeping the ANC feature in tact.

	===Audio Output is Unbalanced===		===Audio Output is Unbalanced===
	*Check the knob in the upper left corner of the back of the unit. Turn it until the dot at the top of the dial is lined up in the middle. The knob should always stay in this position, as it ensures that the audio will not be played in one ear more than the other.		*Check the knob in the upper left corner of the back of the unit. Turn it until the dot at the top of the dial is lined up in the middle. The knob should always stay in this position, as it ensures that the audio will not be played in one ear more than the other.

Melodie: /* Issues With ANC */

2023-02-10T23:39:22Z

Issues With ANC

← Older revision		Revision as of 23:39, 10 February 2023
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	=Troubleshooting=		=Troubleshooting=
	==Issues With ANC==		==Issues With ANC==
			===Unit Won't Turn On===
			*This may happen if a group forgets to turn the system off at the end of their session and it stays on for a long time before finally being switched off. Turn the unit off and leave it off for some time, perhaps while you are setting up and registering your participant. Try pressing the switch again and repeat until it turns on. It may take a few cycles of switch flipping, but the unit has always come back on before long.
	===Noise Cancellation Stops===		===Noise Cancellation Stops===
	*The most common reason that noise cancellation stops completely is because the stimulus presented is too loud and overshoots the safety threshold (111dB).		*The most common reason that noise cancellation stops completely is because the stimulus presented is too loud and overshoots the safety threshold (111dB).

Melodie: /* Setup */

2023-02-10T23:31:36Z

Setup

← Older revision		Revision as of 23:31, 10 February 2023
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	# The algorithm will remain active unless stopped by the user or the system (see Troubleshooting).		# The algorithm will remain active unless stopped by the user or the system (see Troubleshooting).
	# Press STOP if you wish to pause the application of noise cancellation (e.g., to talk to the participant). Press ANC to start it again.		# Press STOP if you wish to pause the application of noise cancellation (e.g., to talk to the participant). Press ANC to start it again.
	# Press the switch on the back of the box to turn it back off ~~after~~ the end of your scan. Leaving it on for long periods of time may cause ~~the unit~~ to exhibit unusual behaviors, such as ~~refusing~~ to turn back on again ~~next time without several flips of the switch~~.		# Press the switch on the back of the box to turn everything back off at the end of your scan. Leaving the unit on for long periods of time may cause it to exhibit unusual behaviors, such as struggling to turn back on again.
	<gallery>		<gallery>
	opto_homescreen.jpg\|1\|1. Home display when power is first turned on.		opto_homescreen.jpg\|1\|1. Home display when power is first turned on.

Melodie: /* Setup */

2023-02-10T23:29:21Z

Setup

← Older revision		Revision as of 23:29, 10 February 2023
Line 20:		Line 20:
	# The algorithm will remain active unless stopped by the user or the system (see Troubleshooting).		# The algorithm will remain active unless stopped by the user or the system (see Troubleshooting).
	# Press STOP if you wish to pause the application of noise cancellation (e.g., to talk to the participant). Press ANC to start it again.		# Press STOP if you wish to pause the application of noise cancellation (e.g., to talk to the participant). Press ANC to start it again.
			# Press the switch on the back of the box to turn it back off after the end of your scan. Leaving it on for long periods of time may cause the unit to exhibit unusual behaviors, such as refusing to turn back on again next time without several flips of the switch.
	<gallery>		<gallery>
	opto_homescreen.jpg\|1\|1. Home display when power is first turned on.		opto_homescreen.jpg\|1\|1. Home display when power is first turned on.

Melodie: /* Setup */

2023-01-04T17:11:21Z

Setup

← Older revision		Revision as of 17:11, 4 January 2023
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	#* If the audio cable is plugged in, make sure no audio is being played or else the learning will fail.		#* If the audio cable is plugged in, make sure no audio is being played or else the learning will fail.
	#* The learning sequence should be at least 30 seconds long and should be the same exact sequence type being used for your fMRI tasks. (5)		#* The learning sequence should be at least 30 seconds long and should be the same exact sequence type being used for your fMRI tasks. (5)
	# Once the learning phase is complete, check that "Learn" ~~in the status box on the screen~~ now says "Noise ~~cancellation~~". If it doesn't (e.g., it reads "Passive" instead), press the ANC button. ~~There~~ should be a significant decrease in the scanner noise heard by the participant. (6)		# Once the learning phase is complete, check that the yellow status box that said "Learn" is now green and says "Noise Cancellation". If it doesn't (e.g., it reads "Idle" or "Passive" instead), press the ANC button. The status should change and there should be a significant decrease in the scanner noise heard by the participant. (6)
	#* This is signified by the decrease in the dB value and the dB waveform seen on the screen for each ear.		#* This is signified by the decrease in the dB value and the dB waveform seen on the screen for each ear.
	#* Note that in Image 6, the red line is flat because the sequence had been stopped at the time the picture was taken. During your active scan with noise cancellation being performed, the red line should look similar to the blue line.		#* Note that in Image 6, the red line is flat because the sequence had been stopped at the time the picture was taken. During your active scan with noise cancellation being performed, the red line should look similar to the blue line.