Hissing Sound Cider Brew

[Sodius]

I started a new batch of hard Cider.
Here are the ingredients

- 5 gallons of pasteurized apple juice
- approx 1 lb of gramma bees honey
- Lalvin EC 1118 yeast

I mixed the honey with apple juice and lightly boiled for 20 mins. I added it in the Carboy with the rest of the apple juice. I was very careful with sterilizing.

The fermentation has been aggressive. After approx 60 hours a high pitch loud whistle started. I thought it was the air lock. I carefully removed the airlock and the whistle kept occurring.

Does anyone know what this is exactly? I assume the bubbles and such at the surface were resonating somehow. Anyone experienced this. It went on for about a half hour after.

 

[Frognostic]

Most I've heard is a fizzing sound.

Never heard a whistling sound.

Maybe the high pitch is due to a high frequency caused by vigorous fermentation?

 

[Sodius]

Most I've heard is a fizzing sound.

Never heard a whistling sound.

Maybe the high pitch is due to a high frequency caused by vigorous fermentation?

There was some serious fermentation happening. But it was a pretty loud whistle. I could hear in the living room with the TV on fairly loud. It sounded like a high frequency dentist drill so it caught my attention. I though it was the air lock at first but I took it off and the sound was coming from inside the carboy. It was some kind of gas bubble resonance or something. I haven't been able to find anything about it online. I'm hoping it means a good batch not a bad batch.

I took a video once I put the air lock safety back on. It's a bad video but you can hear the whistling sound pretty well. I will try to get it up on youtube.

 

[Frognostic]

There was some serious fermentation happening. But it was a pretty loud whistle. I could hear in the living room with the TV on fairly loud. It sounded like a high frequency dentist drill so it caught my attention. I though it was the air lock at first but I took it off and the sound was coming from inside the carboy. It was some kind of gas bubble resonance or something. I haven't been able to find anything about it online. I'm hoping it means a good batch not a bad batch.

I took a video once I put the air lock safety back on. It's a bad video but you can hear the whistling sound pretty well. I will try to get it up on youtube.

Excellent, I'm interested in hearing it.

 

[GrogNerd]

pinhole leak in your carboy?

soapy water might help locate it. gotta be above the liquid line, but check for a puddle underneath

only other thought is you are hearing the Screaming of the Yeast, Clarice

 

[Sodius]

pinhole leak in your carboy?

soapy water might help locate it. gotta be above the liquid line, but check for a puddle underneath

only other thought is you are hearing the Screaming of the Yeast, Clarice

Nothing has leaked. I'm hesitant to think the sound was due to a pinhole in Carboy. The airlock was venting fine and when I took it off (having the top of Carboy fully open) the sound remained the same. I had it off for a minute to reduce risk of contamination. Then it continued for about 25 mins after that.
Must of been screaming yeast! Lol
Pretty neat though. I will post the video soon when I get more time.