Services For Attorneys

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Courtroom Demonstrations
Cross-Exam Prep
Joint Testing
Calibrated Recordings
Expert Testimony
Clandestine Testing
If Your Client Makes Noise
Noise Violations
Lease Language

Is an Expert Witness a "Hired Gun"?

Whose "side" are we on?

The best solution to any noise problem is to fix it, and this is most easily accomplished with the co-operation of all parties. It is cheaper, quicker and causes fewer problems in the future.


...sometimes the parties simply cannot come to an agreement. When litigation begins, attorneys need more than just reliable measurements, they need savvy, experienced advice.

How will you cross-examine the opposition's experts? Is there a way for your client to avoid a fine, even after they've gotten a violation? What are the relevant parts of the Code that pertain to the issues in question?

Read a recent Testimonial Letter from an Attorney

Cross-Examination Prep

Many people imagine a sound level reading as a single number. "How many dBs was it?". The reality is more complicated. Different methods are appropriate for different situations, depending on the location, the source of the sound and the specific Code sections involved.

There are accepted procedures that must be followed in order to make accurate and appropriate measurements. If opposing experts have diverged from accepted procedure, you'll want to be prepared to question them about it. In recent cases, opposing experts deviated from accepted practice in several different ways; would you have caught their errors? [transcript excerpts linked below]

The more you understand about the subtleties of noise and measurement techniques, the better armed you are for litigation. Our consultant, Alan Fierstein has a knack for explaining technical issues in terms that are understandable to the non-expert.

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Joint Testing

Having our consultant observe the tests made by an opposing expert can provide invaluable ammunition for your side's case.

Calibrated Recordings

Acoustilog has been a pioneer in the use of Calibrated Noise Recordings. Unlike the recordings most people are familiar with, ours are made with precision measurement microphones and the calibration procedure is saved right on the recording. This allows them to be used in ways that standard recordings cannot.

Please visit our Calibrated Recordings page.

Clandestine Testing

In cases where the disturbance at issue is intermittent and there is no co-operation between the parties, clandestine testing is necessary. But it can be difficult to "catch" the noise in the standard way - measured in person by an acoustic consultant. We have developed a Tamper-Proof Calibrated Recording System that can be left in the affected premises for an extended time. Your clients can turn the record function on and off when they hear the noise in question, but they cannot otherwise change any of the settings.

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The system actually records sound starting 30 seconds before the client presses "Record", enabling them to catch even very short-lived sounds. Using a written log we ask the client to keep, we can measure and document the recorded disturbances. Depending on the number of channels used, the system can record up to 65 hours and can even be left unattended if the situation requires it.

Long-Term Recordings - A Pattern of Nuisance

Even if you could get a consultant to come over quickly enough to measure an unpredictable noise event, you would only have documented one occurrence. This is sometimes insufficient evidence. A defective elevator that clanks every time it passes the third floor can reasonably be expected to do so regularly. But a measurement of loud music taken in a residence that is located over a restaurant is vulnerable to the defense that the complainant has "cherry-picked" an unrepresentative event - "There was just that one loud party".

We know of one much-reported case in which the plaintiffs lost their suit against a restaurant because their consultant measured exactly twice - each time on New Year's Eve. The judge ruled that " party, even a loud one, does not a recurring nuisance make."

See: A Cautionary Tale: Pildes v. Restaurant Daniel

Courtroom Noise Demonstrations

While there are specific Code limits on noise, it can be difficult for a Judge to imagine exactly what 63 dB at 125 Hz might sound like. See Al Fierstein in action [VIDEO]: Testimony and sound level demonstration at the State Liquor Authority

Hearing the noise, at the same level as it would be heard in the affected location, eliminates the need to guess, and can be very persuasive. Our consultant carries a digital recorder with him and can thus make calibrated recordings in person as well as with our long-term rigs. Sometimes just the threat of calibrated high-fidelity playback in court can be a powerful bargaining chip.

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Expert Witness Testimony

Effective courtroom testimony requires more than just having done the proper measurements. A judge has to weigh the testimony of opposing experts, in an area in which his own expertise is likely limited. An expert who tries to puff up his opinions with impenetrable jargon is less likely to be effective than one who can explain his findings in plain terms. Alan Fierstein has years of successful experience doing just that.

Please visit our Expert Witness Testimony page which includes links to a number of specific decisions and cases.

What if the DEP found no violation?

The NYC Noise Code has language to protect residents from kinds of noise that the DEP does not yet measure. We do.

See DEP Meters

What if Your Client is Making the Noise?

Firstly, we can make our own measurements. If the noise turns out to be within Code limits, our documentation can help your defense. If the noise is indeed in violation of Code, or perhaps of your client's lease, we can make detailed recommendations to fix the problem as cost-effectively as possible.


If your client is actually in violation of local codes, he will eventually have to do what it takes to curb the noise. But paying a fine is essentially money thrown away; money that might be better employed on remediation. Sometimes the DEP's measurements can be shown to have been made incorrectly, and a violation dismissed as a result. Ask us to review their findings.

See "Problems with DEP Measurements"

Lease Language

If your client is a business that makes noise, such as a nightclub, a gym or a kennel, you'll need to make sure that they can operate within the limits of any lease language that addresses noise. We were involved in a case in which a gym was forced to close because they could not. This was good news for our client, the recording studio next door, but a disaster for the gym.

If your client has a special need for quiet, such as a recording studio, you may want to get lease language that will help protect them before they sink money into building out the facility.

Pilot vs. Sutton
Before You Sign a Lease

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