[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [AUDITORY] [EXT] DPM1 DPOAE microphone
- To: AUDITORY@xxxxxxxxxxxxxxx
- Subject: Re: [AUDITORY] [EXT] DPM1 DPOAE microphone
- From: "Henry, Kenneth S" <0000040245e593be-dmarc-request@xxxxxxxxxxxxxxx>
- Date: Fri, 18 Jul 2025 13:31:31 +0000
- Accept-language: en-US
- Approved-by: Kenneth_Henry@xxxxxxxxxxxxxxxxxx
- Arc-authentication-results: i=2; mx.google.com; dkim=pass header.i=@LISTS.MCGILL.CA header.s=SELECTOR1 header.b=VpsIqLnM; arc=fail (signature failed); spf=pass (google.com: domain of owner-auditory@xxxxxxxxxxxxxxx designates 132.206.27.104 as permitted sender) smtp.mailfrom=owner-auditory@xxxxxxxxxxxxxxx; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=mcgill.ca
- Arc-authentication-results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=urmc.rochester.edu; dmarc=pass action=none header.from=urmc.rochester.edu; dkim=pass header.d=urmc.rochester.edu; arc=none
- Arc-message-signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20240605; h=list-archive:list-owner:list-subscribe:list-unsubscribe:list-help :precedence:in-reply-to:to:comments:subject:from:sender:reply-to :date:message-id:mime-version:user-agent:content-language :accept-language:references:thread-index:thread-topic:approved-by :dkim-signature; bh=Hxzgbk+PFWF0stUUjnf7/GsOJqsolS/VQFAj5R/+yKo=; fh=5/42mu9FVmfuMp6n0xGXVcDar2H3ENcHt8Uv11Om8gY=; b=bHYDHemio2T61Feqeg9hE6OcF2IEZJrn1rnL1+UfXTWCuDtruhqUyzIQ8Nj1hOTy2O Zl5mCPfCJrHzZrx5+mKLfJLCfYmAPv2M0IkCz9AEDR3+7COMshh2vlcZoLCoQB0c85n6 PEMBYGY8bsPmWGrQ//6x80c8J0xSXm4Jti/tKSUFw+1amOE78hkQf3ibbILZfz3J4AWB ccX7sIQ4hCw6VM4+jqMIjnhwvv6NUYl4pl6aSkYw6HscIXqTHDlRg7Tu5zkLJ2pzQEqb LFSH/w293BxNkHxBhKvNnosLQnjcnokdcm0kwcmVtECSRgeg+u+UH+joTUr3lewSjxnF Vmzw==; dara=google.com
- Arc-message-signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=Hxzgbk+PFWF0stUUjnf7/GsOJqsolS/VQFAj5R/+yKo=; b=BeYU0Vct4VeYBeLLto6fquVH8y0CFiNEAeQSSOKZb6bzcFXNySdtRO/ECzLkFGys8jlCSGKv5BJrcrPE0/SBaRVV1BSSfuCyOa14HFbJP+cqBoTCR7F9VSGgUx7he0xwlk+3+kdJX5E/iUGHX3UlCTdlNa7NUO24F3fUgGOkXU/wOq2WM1KwqVLe7hEn+wPnd9bjmPHbdO31R4IWDDDDKzdPlqpnT1bxjQAVHLnR+iYTNNpDetjBN+/v2l0nF3y9ld0YUOGb8XDqic8foWKAgjcfN3H8WeEojCq20HkA5iShUJJPZtaKgQEZYyxu/cOkat9nq7/A52M3+V5QhDjZBg==
- Arc-seal: i=2; a=rsa-sha256; t=1752898469; cv=fail; d=google.com; s=arc-20240605; b=hMeR0ORRWT0jCy/cXiuujW6GSX8/KCo4iyu+UhH/nOMMPbum2iBFBCqg9JKbICd4IX urk92+bIpq3JqTeTzuTJGoFWuzZ8lTJgyElPEBeahvcCXvL27WUB1Yk8KeK6M8+yZs0L 1Oc3ZEK79opGFgwye0S5yj6isKTrObO653W2G9FqpOdPCQGKtu+b7F1L1ERhbSzuuOB7 OjpwYqGvraLaozaJEi2njuG8SfykEj3ToZKP3pTykAr5fxbf4+WEQNSv5y75TI0VKTq4 3T5mTl7KOtgbwpVU4MdOTfz/5QbG380vTM3X0bVBSutKB15u9uPKee4E6YxdxMq/aWz5 YLPQ==
- Arc-seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=PvEr301lIfMWobKSwvEGsdo1gdz5PzxTHnTKyYGluw6tGlpHKvWdIIDMqF21RypFbxLplrKHLfO80xviup5Jmr3KxOUVowrZuMtYUUOzWEtXNTLZwCe1nxgSZUbfI3pP7Vv8bSMhmbkWORgfXzm+WumkcHJyK1KlwLoAF2xA6kLR36lzzbeKpaQIv3HI2yNoaJMAEtyh+Z4QhehuS+nZYNiTDNxaI6psPAhUosION8P4hUAZq7w+F4lUYDmmYInTeyJIDhnhAezU1fiqPNqSWrHRc8/B6xtZ/6yx6dyASzRvFKHQBVtBsl8ost5ypJ2FvSdPL0dRlKw3lYb8k8tQog==
- Authentication-results: mx.google.com; dkim=pass header.i=@LISTS.MCGILL.CA header.s=SELECTOR1 header.b=VpsIqLnM; arc=fail (signature failed); spf=pass (google.com: domain of owner-auditory@xxxxxxxxxxxxxxx designates 132.206.27.104 as permitted sender) smtp.mailfrom=owner-auditory@xxxxxxxxxxxxxxx; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=mcgill.ca
- Comments: To: "Mertes, Ian Benjamin" <imertes@xxxxxxxxxxxx>
- Delivered-to: dan.ellis@xxxxxxxxx
- Dkim-signature: v=1; a=rsa-sha256; d=LISTS.MCGILL.CA; s=SELECTOR1; c=relaxed/relaxed; bh=Hxzgbk+PFWF0stUUjnf7/GsOJqsolS/VQFAj5R/+yKo=; i=@LISTS.MCGILL.CA; h=Approved-By:ARC-Seal:ARC-Message-Signature:ARC-Authentication-Results:Thread-Topic:Thread-Index:References:Accept-Language:Content-Language:user-agent:Content-Type:MIME-Version:Message-ID:Date:Reply-To:Sender:From:Subject:To:In-Reply-To:List-Help:List-Unsubscribe:List-Subscribe:List-Owner:List-Archive; b=VpsIqLnM4n8Powb2RxzKJcf/GZyX7lMT/MAQIrUi4nQQp0zGvQ9N8S54Al0VOzipHD15u/onK2aARQMIZCGCeWyJAMOP8B4tvnbmQu2kGFslmHYsTtS7YU1YU+ItY7Au/n3f8tsclt/N+LcCljvt4Vo1/yQEH8pgx1CZRu0Q9LK6Tc9bykqdBku8iCtjvq9MwdPl0cmwcu1MXPpNrGP1Gk7SrLcr4lEImHVt9oe+2iojxWu+xoUK1n4JUm6MODar9stz60e5BM//dOuPeNcpufgP9EIDhaqHV/roSekJ08L/8X+xNFdRbjPkBMRc87XpgzNZZoOyl6N/Bf1OvnJaMw==
- In-reply-to: <MN2PR11MB42723AFA5D9B84BA50C824CFCA51A@MN2PR11MB4272.namprd11.prod.outlook.com>
- List-archive: <https://lists.mcgill.ca/scripts/wa.exe?LIST=AUDITORY>
- List-help: <https://lists.mcgill.ca/scripts/wa.exe?LIST=AUDITORY>, <mailto:LISTSERV@LISTS.MCGILL.CA?body=INFO%20AUDITORY>
- List-owner: <mailto:AUDITORY-request@LISTS.MCGILL.CA>
- List-subscribe: <mailto:AUDITORY-subscribe-request@LISTS.MCGILL.CA>
- List-unsubscribe: <mailto:AUDITORY-unsubscribe-request@LISTS.MCGILL.CA>
- References: <MN2PR11MB42723AFA5D9B84BA50C824CFCA51A@MN2PR11MB4272.namprd11.prod.outlook.com>
- Reply-to: "Henry, Kenneth S" <Kenneth_Henry@xxxxxxxxxxxxxxxxxx>
- Sender: AUDITORY - Research in Auditory Perception <AUDITORY@xxxxxxxxxxxxxxx>
- Thread-index: Adv3MOGWhJ5VAn5jSa6cGT/YqNybhwAt2LWA
- Thread-topic: [EXT] DPM1 DPOAE microphone
- User-agent: Mozilla Thunderbird
Hi Ian,
I'll share what we found, comparing the frequency response of the DPM1 and ER10B+ in the free field. Measurements were made in a large double walled booth lined with acoustic foam, and are expressed in dB relative to the output of a B&K 1/4" calibration
microphone. All mics were placed at the same location relative to the speaker.
The blue curve is the output of our old ER10B+. It rolls off above 12 kHz and looks very similar to the frequency response provided by Etymotic with the microphone (see attached file ER10B_Etymotic).
The red curve is the output of the DPM1. I'll just say that it was not what we expected and we have not been using the microphone for emissions measurements. I was in contact with TDT several months ago about the issue but I have not heard back about their
test results after an initial consultation.
Good luck! Ken
Kenneth S Henry, PhD
Department of Otolaryngology
University of Rochester
Rochester, NY 14642
(585)831-7789
On 7/17/2025 11:44 AM, Mertes, Ian Benjamin wrote:
Hello list,
I currently use Etymotic Research ER-10B+ and ER-10C probes for measuring otoacoustic emissions in humans. However, these probes are no longer sold or serviced.
I’m interested in the Tucker-Davis Technologies
DPM1 DPOAE microphone because it’s battery powered and has a BNC connection. I would be interested in hearing about anyone’s experience with this probe.
Best,
Ian
![]()
Under the Illinois Freedom of Information Act any written communication to or from university employees regarding university business is a public record and may be subject to public disclosure.
Attachment:
ER10B_Etymomtic.jpg
Description: ER10B_Etymomtic.jpg
