Features:

4 Waveform Types: Sine, Triangle, Sawtooth, and Square waves

Interactive Knob: Rotary frequency control (20Hz - 20kHz) with drag interaction

Oscilloscope Visualizer: Real-time waveform display with green trace

Modulation Options: FM (Frequency Modulation), AM (Amplitude Modulation), and RM (Ring Modulation)

Adjustable Parameters:

Modulation frequency (0.1-50 Hz)

Modulation depth (0-100%)

Volume control (0-100%)

New Features:

Number Input Box:

Type exact frequency values (20-20000 Hz)

Set Button:

Apply the typed frequency

Enter Key Support:

Press Enter to apply the frequency

Real-time Sync:

The input box and knob stay synchronized:

Turn the knob → input box updates
Type a number → knob position updates

Input Validation:

Automatically constrains values between 20-20000 Hz

Now you can:

Use the knob for quick, intuitive adjustments

Type precise frequencies like 432 Hz, 528 Hz, or any specific value you need

Both controls stay perfectly in sync!

New Features:

Subsonic Frequency Support (0.1 Hz - 20 Hz)

Visual Only Mode: When frequency drops below 20 Hz, the app automatically switches to visual-only mode

No Sound Output: Below 20 Hz, no audio is generated (since it's outside human hearing range)

Animated Pulse Visualization: The oscilloscope shows a smooth, animated waveform that pulses at the set frequency

Warning Indicator: Yellow warning message appears: "Sub-20Hz: Visual Only (No Sound)"

How It Works:

0.1 - 19.9 Hz: Visual pulse only, no sound

20 - 20000 Hz: Full audio + visualization

Use Cases:

Study waveform patterns at extremely low frequencies

Visual metronome for slow rhythms (0.5 Hz = 30 BPM)

Scientific demonstrations of infrasound frequencies

Meditation timers with visual pulses

The waveform animates smoothly across the oscilloscope at whatever frequency you set - you can watch a 1 Hz pulse complete one full cycle per second, or a 0.1 Hz pulse take 10 seconds to complete!

New Amplitude Controls:

Carrier Amplitude (Blue):

Controls: The amplitude of the main source signal (your primary oscillator)
Visibility: Always visible
Range: 0-100%
Affects the overall output level

Modulator Amplitude (Pink):

Controls: The amplitude of the modulation signal
Only appears when FM, AM, or RM modulation is active Range: 0-100% Works independently from the carrier

How They Work Together:

FM (Frequency Modulation):

Carrier Amplitude: Sets volume of the main tone
Modulator Amplitude: Controls how much the modulator affects frequency deviation
Mod Depth: Sets the range of frequency variation

AM (Amplitude Modulation):

Carrier Amplitude: Sets base volume level
Modulator Amplitude: Controls strength of amplitude variation
Mod Depth: Sets depth of volume modulation

RM (Ring Modulation):

Carrier Amplitude: Sets volume of carrier signal

Modulator Amplitude: Controls modulator signal strength
Creates complex harmonic sidebands

Now you have full control over both signals independently, allowing for much more precise sound design and modulation effects!