Interactive Solfeggio & Pure Tone Frequency Synthesizer
Tap any reference frequency below (174 Hz – 963 Hz, including 432 Hz and 528 Hz) to synthesize a clean harmonic tone live in your browser.
Select Reference Frequency (Hz)
What 174 Hz sounds like and why low frequencies feel physically calming
Sitting near the musical note F3 (just below the lowest string of a standard acoustic guitar's third fret), 174 Hz is the lowest anchor of the extended Solfeggio frequency scale. Because its wavelength in air is nearly two metres long, a 174 Hz tone has none of the piercing edge of upper-register frequencies: it feels like a warm cello drone or a distant Tibetan singing bowl.
In sound-meditation traditions, 174 Hz is described as a grounding, body-focused tone used during evening stretching, breathwork or Savasana after physical exertion. From an acoustic psychology standpoint, low-fundamental tones between 120 Hz and 200 Hz naturally encourage slower respiration and lower muscle bracing compared with bright upper-mid tones.
How to listen to 174 Hz without ear fatigue
- Keep "Soft shimmer" enabled: A raw, single-oscillator sine wave at 174 Hz can sound like an audio test bench. Our default Soft shimmer mode layers three gently detuned voices with slow harmonic motion so the tone breathes like an acoustic instrument.
- Use headphones or desktop speakers: Tiny phone speakers often struggle to reproduce frequencies below 200 Hz cleanly. Headphones or a small speaker on a wooden desk bring out the full warmth of 174 Hz.
- Blend with rain or brown noise: Set the 174 Hz tone volume around 25–30% and bring up Rain or Brown Noise so the tone sits as a gentle harmonic floor rather than dominating the room.
Frequently asked questions
What musical note is 174 Hz?
In standard A4 = 440 Hz concert pitch, F3 sits at 174.61 Hz, making 174 Hz a slightly flat, warm F3 in the baritone/cello register.
Do I need headphones to listen to 174 Hz?
No. Unlike binaural beats, 174 Hz is a single reference frequency that works on both speakers and headphones, though headphones reproduce its warm bass fundamental much better than small phone speakers.
Can I combine 174 Hz with binaural beats?
Yes. You can either play the 174 Hz tone from the Tones panel alongside ambient sounds, or set your Brainwaves carrier frequency directly to 174 Hz with a 4 Hz Theta or 2.5 Hz Delta beat.
Is 174 Hz a medical treatment for pain?
No. While low, soothing drones help people relax tense muscles and slow their breathing during rest, Solfeggio frequencies are wellness and meditation tools, not medical treatments.