A site dedicated to the review and analysis of potential sasquatch vocalizations, Sasquatch Bioacoustic combines techniques from the domains of intelligence collection, audio analysis and bioacoustic studies to examine the evidence of sasquatch through their vocalizations. ~Monongahela

Wednesday, August 7, 2013

Possible Vocals Near Seneca Rocks

On June 23, 2013, at 12:30 a.m. my recorder caught these interesting vocals at Seneca Shadows campground in West Virginia. I'd never recorded there before that weekend, and I can't rule out other campers as the source of the sounds. But I am struck by how similar they are to some vocals captured in Michigan, and reported in BFRO report #32981. I'm on the fence about these, but thought they would be an interesting share.

Sunday, July 28, 2013

Two Knocks and a Whoop

In many ways the 2010 BFRO expedition to Tennessee was a real eye opener for me. It was my first formal (non-private) expedition and it was the first (and only to date) time I ever saw eye glow (saw it twice that night). While the recording results weren't great from the exped, I did manage to capture some good knocks and a few faint whoops. Here's one of the better ones.

On the last night of the expedition, sometime between 3 and 5 a.m. a wood knock was recorded near our camp (we were all asleep), a couple seconds later a distant knock responded, followed by a long whoop from the south.

Thursday, July 25, 2013

A Knock and A Shriek

In 2012 I began a recording investigation in a new location here in Virginia. The recording conditions were very challenging. A lot of private property prevented me from getting closer to the area where most of the interesting vocals were coming from. Frequent car traffic on a nearby road often wiped out the audio. But every once in a while the mics would pick up a good vocal from the surrounding forest. And a handful of those made it into my "Best of 2012" collection.

This clip is a great demonstration of both the unsettling "shriek" that sasquatch have been suspected of emitting, and the wood knocks they often integrate into their vocals.

Wednesday, July 24, 2013

Morning Whoops

Over the years I've managed to capture a subtle type of vocal that I've come to nickname the "Morning Whoop". These whoops are normally gentler, understated, and don't readily resemble the louder, more raucous whoops that may be heard in the full darkness of night. Instead, these quick, soft spoken vocals seem intended to fit in quietly among the many peeps, tweets, and cackles of bird song that rise with the approach of dawn.

I've caught morning whoops similar to the two presented below in Georgia, and heard similar from other researchers in Michigan and Alabama. I've often wondered if they aren't an understated attempt by the vocalizers to keep track of each other shortly before they go to ground for the day light hours. Pure speculation on my part, but one day I hope we'll have the answer.

In the mean time, here are two morning whoops captured at 5:55 a.m. in Albemarle County, Virginia, on October 8, 2012. This video also demonstrates the ability of spectrograms to pinpoint quiet vocals, and for post processing to enhance vocals for better audibility.

Monday, July 22, 2013

Knocks and a Roar, June 2013

This year's audio results in my Virginia research location haven't been as productive as last year. But I have caught just enough to let me know the squatch are still in the area. They seem to be keeping their voice down as opposed to how vocal they were when I first recorded here in 2012. This clip is not the best, as the vocalizer was far from the recorder. But progressive filtering passes improved the audio so that with headphones you can better hear the initial rapid wood knocks that immediately precede a "roar" like vocal.

Sunday, July 21, 2013

Two-tone vocal from Kentucky

Recently, Charlie Raymond from the Kentucky Bigfoot Research Organization shared with me a short clip of a possible sasquatch vocalization. This vocal was captured on cell phone video while he walked the forested area of his family's property. The video is unremarkable, but the audio demonstrates a "two-tone" characteristic that has been captured in other possible sasquatch vocals.

The vocal starts with a deeper, raspy note that quickly breaks upward in pitch to a tightly focused vocal tone. Over the years I've heard similar vocals in the recordings made by Rick Noffke in Minnesota, and my own recordings from south Georgia.

Here's the most recent clip from Kentucky: The Summer Shade Howl

Tuesday, June 25, 2013

Iowa Moan Howl - April 2013

Earlier this month Steve Moon from Iowa, a BFRO investigator contacted me with an audio clip and the following information:

"This howl was recorded at the April public expedition in Iowa. If you look at a spectrogram there [appears to be] a double howl, one starting two seconds after the first at about 200 Hz higher register. The higher howl decays two seconds after the first one [...]. I verified as much as possible whether the howl was from our group or not. It was not from our group. The area that it came out of is undeveloped with deep woods lining the valley and swampy bogs in the valley bottom. The valley is a bit less than a half mile from side to side."

I gave Steve's audio a good review and post processing, then responded to him with the following thoughts:

"Steve, I have a somewhat different interpretation of the spectrogram than what you're reading. Allow me to elaborate.

 It's not a double howl you're seeing, but multiple resonating harmonics from a single howl. The lowest "resonating harmonic" that you see is the loudest, most visible in your spectogram. It ascends to a peak of about 730Hz or so. The higher harmonic peaks at about 1100Hz. It's softer in volume but it adds "depth" to the vocal.

The way harmonics work is simple math. They should normally be seperated by a common multiple (e.g. 2x, 3x, etc.). Now when we subtract your lower harmonic from your upper harmonic (or 1100-730) we get 370Hz. If the lower harmonic (730Hz) were your true "fundamental" of this howl, the next higher harmonic would be at 1460 (2x730), and not at 1100.

What this tells us is there's a harmonic even lower than 730Hz. And if we divide 730Hz by 2 we get 365 Hz (which is pretty darn close to the 370 Hz difference we see in the two visible harmonics). This is just a round about way of telling you this howl is a single howl with an "attenuated fundamental" at ~370Hz.

The attenuated fundamental is ... a feature difficult for most normally sized humans to achieve (you can test it yourself with your own recorder). Only large bodied individuals like Bobo have been able to produce this reliably, in my experience (not saying someone smaller couldn't learn to do it though).

A couple other features I'd like to point out. First, obviously the duration of the howl. Nearly 15 seconds, is rather difficult for a human with no vocal training to achieve (or at least some amount of natural talent).

Also, notice as the howl trails off how the higher harmonic seems to end then restart at a slightly lower pitch. This is due to the voice changing from an /aa/ phoneme to an /oo/ phoneme."

There were a number of other points I shared with Steve about his clip. They're important clues that I look for when trying to authenticate possible sasquatch vocals, and his recording exhibits several of them. So in the end I feel Steve has hit the jackpot, and captured a reliably authentic sasquatch moan howl.