01101001 01101110
fn init() -> Result<()>
for x in 0..buf.len()
load(addr, 0xFF)
sys.run(0x4A, flags)
if val > 0 { dispatch() }
>> 0x00: READY
loop { poll(); yield; }
stream.flush()
0xDEAD :: 0xBEEF
bind(sock, &addr, len)
pub fn connect(host: &str)
match state {
State::Init => boot(),
State::Run => tick(),
_ => halt(),
}
reg[0x3] = 0b11001010
clk.tick()
assert!(val != null)
>> SIGNAL RECEIVED
buf[i] ^= key[i % klen]
let n = read(fd, buf, 64)
while !done { step(); }
push(stack, frame)
0x7F :: OK
type Handler = fn(Ctx)
emit(Event::Data, payload)
select! { rx => handle(rx) }
spawn(async move { run() })
>> 0x01: PROCESSING
map.insert(k, v)
drain().collect::<Vec<_>>()
let _ = tx.send(msg)
timeout(Duration::ms(100))
>> CHECKSUM PASS
fn encode(src: &[u8]) -> Vec
pipe.write_all(&frame)
crc32(data, len)
>> 0x00FF: ACK
schedule(task, interval)
lock.acquire()
>> SYNC COMPLETE
release(ptr)
0x00 0x00 0x00 0x01
watchdog.reset()
>> LINK ESTABLISHED
fn poll(&mut self) -> Poll
waker.wake_by_ref()
cx.waker().clone()
01101001 01101110
fn init() -> Result<()>
for x in 0..buf.len()
load(addr, 0xFF)
sys.run(0x4A, flags)
if val > 0 { dispatch() }
>> 0x00: READY
loop { poll(); yield; }
stream.flush()
0xDEAD :: 0xBEEF
bind(sock, &addr, len)
pub fn connect(host: &str)
match state {
State::Init => boot(),
State::Run => tick(),
_ => halt(),
}
reg[0x3] = 0b11001010
clk.tick()
assert!(val != null)
>> SIGNAL RECEIVED
buf[i] ^= key[i % klen]
let n = read(fd, buf, 64)
while !done { step(); }
push(stack, frame)
0x7F :: OK
type Handler = fn(Ctx)
emit(Event::Data, payload)
select! { rx => handle(rx) }
spawn(async move { run() })
>> 0x01: PROCESSING
map.insert(k, v)
drain().collect::<Vec<_>>()
let _ = tx.send(msg)
timeout(Duration::ms(100))
>> CHECKSUM PASS
fn encode(src: &[u8]) -> Vec
pipe.write_all(&frame)
crc32(data, len)
>> 0x00FF: ACK
schedule(task, interval)
lock.acquire()
>> SYNC COMPLETE
release(ptr)
0x00 0x00 0x00 0x01
watchdog.reset()
>> LINK ESTABLISHED
fn poll(&mut self) -> Poll
waker.wake_by_ref()
cx.waker().clone()
stream.flush()
0xDEAD :: 0xBEEF
bind(sock, &addr, len)
pub fn connect(host: &str)
match state {
State::Init => boot(),
State::Run => tick(),
_ => halt(),
}
reg[0x3] = 0b11001010
clk.tick()
assert!(val != null)
>> SIGNAL RECEIVED
buf[i] ^= key[i % klen]
let n = read(fd, buf, 64)
while !done { step(); }
push(stack, frame)
0x7F :: OK
type Handler = fn(Ctx)
emit(Event::Data, payload)
select! { rx => handle(rx) }
spawn(async move { run() })
>> 0x01: PROCESSING
map.insert(k, v)
drain().collect::<Vec<_>>()
let _ = tx.send(msg)
timeout(Duration::ms(100))
>> CHECKSUM PASS
fn encode(src: &[u8]) -> Vec
pipe.write_all(&frame)
crc32(data, len)
>> 0x00FF: ACK
schedule(task, interval)
lock.acquire()
>> SYNC COMPLETE
release(ptr)
0x00 0x00 0x00 0x01
watchdog.reset()
>> LINK ESTABLISHED
fn poll(&mut self) -> Poll
waker.wake_by_ref()
cx.waker().clone()
01101001 01101110
fn init() -> Result<()>
for x in 0..buf.len()
load(addr, 0xFF)
sys.run(0x4A, flags)
if val > 0 { dispatch() }
>> 0x00: READY
loop { poll(); yield; }
stream.flush()
0xDEAD :: 0xBEEF
bind(sock, &addr, len)
pub fn connect(host: &str)
match state {
State::Init => boot(),
State::Run => tick(),
_ => halt(),
}
reg[0x3] = 0b11001010
clk.tick()
assert!(val != null)
>> SIGNAL RECEIVED
buf[i] ^= key[i % klen]
let n = read(fd, buf, 64)
while !done { step(); }
push(stack, frame)
0x7F :: OK
type Handler = fn(Ctx)
emit(Event::Data, payload)
select! { rx => handle(rx) }
spawn(async move { run() })
>> 0x01: PROCESSING
map.insert(k, v)
drain().collect::<Vec<_>>()
let _ = tx.send(msg)
timeout(Duration::ms(100))
>> CHECKSUM PASS
fn encode(src: &[u8]) -> Vec
pipe.write_all(&frame)
crc32(data, len)
>> 0x00FF: ACK
schedule(task, interval)
lock.acquire()
>> SYNC COMPLETE
release(ptr)
0x00 0x00 0x00 0x01
watchdog.reset()
>> LINK ESTABLISHED
fn poll(&mut self) -> Poll
waker.wake_by_ref()
cx.waker().clone()
01101001 01101110
fn init() -> Result<()>
for x in 0..buf.len()
load(addr, 0xFF)
sys.run(0x4A, flags)
if val > 0 { dispatch() }
>> 0x00: READY
loop { poll(); yield; }
}
reg[0x3] = 0b11001010
clk.tick()
assert!(val != null)
>> SIGNAL RECEIVED
buf[i] ^= key[i % klen]
let n = read(fd, buf, 64)
while !done { step(); }
push(stack, frame)
0x7F :: OK
type Handler = fn(Ctx)
emit(Event::Data, payload)
select! { rx => handle(rx) }
spawn(async move { run() })
>> 0x01: PROCESSING
map.insert(k, v)
drain().collect::<Vec<_>>()
let _ = tx.send(msg)
timeout(Duration::ms(100))
>> CHECKSUM PASS
fn encode(src: &[u8]) -> Vec
pipe.write_all(&frame)
crc32(data, len)
>> 0x00FF: ACK
schedule(task, interval)
lock.acquire()
>> SYNC COMPLETE
release(ptr)
0x00 0x00 0x00 0x01
watchdog.reset()
>> LINK ESTABLISHED
fn poll(&mut self) -> Poll
waker.wake_by_ref()
cx.waker().clone()
01101001 01101110
fn init() -> Result<()>
for x in 0..buf.len()
load(addr, 0xFF)
sys.run(0x4A, flags)
if val > 0 { dispatch() }
>> 0x00: READY
loop { poll(); yield; }
stream.flush()
0xDEAD :: 0xBEEF
bind(sock, &addr, len)
pub fn connect(host: &str)
match state {
State::Init => boot(),
State::Run => tick(),
_ => halt(),
}
reg[0x3] = 0b11001010
clk.tick()
assert!(val != null)
>> SIGNAL RECEIVED
buf[i] ^= key[i % klen]
let n = read(fd, buf, 64)
while !done { step(); }
push(stack, frame)
0x7F :: OK
type Handler = fn(Ctx)
emit(Event::Data, payload)
select! { rx => handle(rx) }
spawn(async move { run() })
>> 0x01: PROCESSING
map.insert(k, v)
drain().collect::<Vec<_>>()
let _ = tx.send(msg)
timeout(Duration::ms(100))
>> CHECKSUM PASS
fn encode(src: &[u8]) -> Vec
pipe.write_all(&frame)
crc32(data, len)
>> 0x00FF: ACK
schedule(task, interval)
lock.acquire()
>> SYNC COMPLETE
release(ptr)
0x00 0x00 0x00 0x01
watchdog.reset()
>> LINK ESTABLISHED
fn poll(&mut self) -> Poll
waker.wake_by_ref()
cx.waker().clone()
01101001 01101110
fn init() -> Result<()>
for x in 0..buf.len()
load(addr, 0xFF)
sys.run(0x4A, flags)
if val > 0 { dispatch() }
>> 0x00: READY
loop { poll(); yield; }
stream.flush()
0xDEAD :: 0xBEEF
bind(sock, &addr, len)
pub fn connect(host: &str)
match state {
State::Init => boot(),
State::Run => tick(),
_ => halt(),
push(stack, frame)
0x7F :: OK
type Handler = fn(Ctx)
emit(Event::Data, payload)
select! { rx => handle(rx) }
spawn(async move { run() })
>> 0x01: PROCESSING
map.insert(k, v)
drain().collect::<Vec<_>>()
let _ = tx.send(msg)
timeout(Duration::ms(100))
>> CHECKSUM PASS
fn encode(src: &[u8]) -> Vec
pipe.write_all(&frame)
crc32(data, len)
>> 0x00FF: ACK
schedule(task, interval)
lock.acquire()
>> SYNC COMPLETE
release(ptr)
0x00 0x00 0x00 0x01
watchdog.reset()
>> LINK ESTABLISHED
fn poll(&mut self) -> Poll
waker.wake_by_ref()
cx.waker().clone()
01101001 01101110
fn init() -> Result<()>
for x in 0..buf.len()
load(addr, 0xFF)
sys.run(0x4A, flags)
if val > 0 { dispatch() }
>> 0x00: READY
loop { poll(); yield; }
stream.flush()
0xDEAD :: 0xBEEF
bind(sock, &addr, len)
pub fn connect(host: &str)
match state {
State::Init => boot(),
State::Run => tick(),
_ => halt(),
}
reg[0x3] = 0b11001010
clk.tick()
assert!(val != null)
>> SIGNAL RECEIVED
buf[i] ^= key[i % klen]
let n = read(fd, buf, 64)
while !done { step(); }
push(stack, frame)
0x7F :: OK
type Handler = fn(Ctx)
emit(Event::Data, payload)
select! { rx => handle(rx) }
spawn(async move { run() })
>> 0x01: PROCESSING
map.insert(k, v)
drain().collect::<Vec<_>>()
let _ = tx.send(msg)
timeout(Duration::ms(100))
>> CHECKSUM PASS
fn encode(src: &[u8]) -> Vec
pipe.write_all(&frame)
crc32(data, len)
>> 0x00FF: ACK
schedule(task, interval)
lock.acquire()
>> SYNC COMPLETE
release(ptr)
0x00 0x00 0x00 0x01
watchdog.reset()
>> LINK ESTABLISHED
fn poll(&mut self) -> Poll
waker.wake_by_ref()
cx.waker().clone()
01101001 01101110
fn init() -> Result<()>
for x in 0..buf.len()
load(addr, 0xFF)
sys.run(0x4A, flags)
if val > 0 { dispatch() }
>> 0x00: READY
loop { poll(); yield; }
stream.flush()
0xDEAD :: 0xBEEF
bind(sock, &addr, len)
pub fn connect(host: &str)
match state {
State::Init => boot(),
State::Run => tick(),
_ => halt(),
}
reg[0x3] = 0b11001010
clk.tick()
assert!(val != null)
>> SIGNAL RECEIVED
buf[i] ^= key[i % klen]
let n = read(fd, buf, 64)
while !done { step(); }
drain().collect::<Vec<_>>()
let _ = tx.send(msg)
timeout(Duration::ms(100))
>> CHECKSUM PASS
fn encode(src: &[u8]) -> Vec
pipe.write_all(&frame)
crc32(data, len)
>> 0x00FF: ACK
schedule(task, interval)
lock.acquire()
>> SYNC COMPLETE
release(ptr)
0x00 0x00 0x00 0x01
watchdog.reset()
>> LINK ESTABLISHED
fn poll(&mut self) -> Poll
waker.wake_by_ref()
cx.waker().clone()
01101001 01101110
fn init() -> Result<()>
for x in 0..buf.len()
load(addr, 0xFF)
sys.run(0x4A, flags)
if val > 0 { dispatch() }
>> 0x00: READY
loop { poll(); yield; }
stream.flush()
0xDEAD :: 0xBEEF
bind(sock, &addr, len)
pub fn connect(host: &str)
match state {
State::Init => boot(),
State::Run => tick(),
_ => halt(),
}
reg[0x3] = 0b11001010
clk.tick()
assert!(val != null)
>> SIGNAL RECEIVED
buf[i] ^= key[i % klen]
let n = read(fd, buf, 64)
while !done { step(); }
push(stack, frame)
0x7F :: OK
type Handler = fn(Ctx)
emit(Event::Data, payload)
select! { rx => handle(rx) }
spawn(async move { run() })
>> 0x01: PROCESSING
map.insert(k, v)
drain().collect::<Vec<_>>()
let _ = tx.send(msg)
timeout(Duration::ms(100))
>> CHECKSUM PASS
fn encode(src: &[u8]) -> Vec
pipe.write_all(&frame)
crc32(data, len)
>> 0x00FF: ACK
schedule(task, interval)
lock.acquire()
>> SYNC COMPLETE
release(ptr)
0x00 0x00 0x00 0x01
watchdog.reset()
>> LINK ESTABLISHED
fn poll(&mut self) -> Poll
waker.wake_by_ref()
cx.waker().clone()
01101001 01101110
fn init() -> Result<()>
for x in 0..buf.len()
load(addr, 0xFF)
sys.run(0x4A, flags)
if val > 0 { dispatch() }
>> 0x00: READY
loop { poll(); yield; }
stream.flush()
0xDEAD :: 0xBEEF
bind(sock, &addr, len)
pub fn connect(host: &str)
match state {
State::Init => boot(),
State::Run => tick(),
_ => halt(),
}
reg[0x3] = 0b11001010
clk.tick()
assert!(val != null)
>> SIGNAL RECEIVED
buf[i] ^= key[i % klen]
let n = read(fd, buf, 64)
while !done { step(); }
push(stack, frame)
0x7F :: OK
type Handler = fn(Ctx)
emit(Event::Data, payload)
select! { rx => handle(rx) }
spawn(async move { run() })
>> 0x01: PROCESSING
map.insert(k, v)
bind(sock, &addr, len)
pub fn connect(host: &str)
match state {
State::Init => boot(),
State::Run => tick(),
_ => halt(),
}
reg[0x3] = 0b11001010
clk.tick()
assert!(val != null)
>> SIGNAL RECEIVED
buf[i] ^= key[i % klen]
let n = read(fd, buf, 64)
while !done { step(); }
push(stack, frame)
0x7F :: OK
type Handler = fn(Ctx)
emit(Event::Data, payload)
select! { rx => handle(rx) }
spawn(async move { run() })
>> 0x01: PROCESSING
map.insert(k, v)
drain().collect::<Vec<_>>()
let _ = tx.send(msg)
timeout(Duration::ms(100))
>> CHECKSUM PASS
fn encode(src: &[u8]) -> Vec
pipe.write_all(&frame)
crc32(data, len)
>> 0x00FF: ACK
schedule(task, interval)
lock.acquire()
>> SYNC COMPLETE
release(ptr)
0x00 0x00 0x00 0x01
watchdog.reset()
>> LINK ESTABLISHED
fn poll(&mut self) -> Poll
waker.wake_by_ref()
cx.waker().clone()
01101001 01101110
fn init() -> Result<()>
for x in 0..buf.len()
load(addr, 0xFF)
sys.run(0x4A, flags)
if val > 0 { dispatch() }
>> 0x00: READY
loop { poll(); yield; }
stream.flush()
0xDEAD :: 0xBEEF
bind(sock, &addr, len)
pub fn connect(host: &str)
match state {
State::Init => boot(),
State::Run => tick(),
_ => halt(),
}
reg[0x3] = 0b11001010
clk.tick()
assert!(val != null)
>> SIGNAL RECEIVED
buf[i] ^= key[i % klen]
let n = read(fd, buf, 64)
while !done { step(); }
push(stack, frame)
0x7F :: OK
type Handler = fn(Ctx)
emit(Event::Data, payload)
select! { rx => handle(rx) }
spawn(async move { run() })
>> 0x01: PROCESSING
map.insert(k, v)
drain().collect::<Vec<_>>()
let _ = tx.send(msg)
timeout(Duration::ms(100))
>> CHECKSUM PASS
fn encode(src: &[u8]) -> Vec
pipe.write_all(&frame)
crc32(data, len)
>> 0x00FF: ACK
schedule(task, interval)
lock.acquire()
>> SYNC COMPLETE
release(ptr)
0x00 0x00 0x00 0x01
watchdog.reset()
>> LINK ESTABLISHED
fn poll(&mut self) -> Poll
waker.wake_by_ref()
cx.waker().clone()
01101001 01101110
fn init() -> Result<()>
for x in 0..buf.len()
load(addr, 0xFF)
sys.run(0x4A, flags)
if val > 0 { dispatch() }
>> 0x00: READY
loop { poll(); yield; }
stream.flush()
0xDEAD :: 0xBEEF
>> SIGNAL RECEIVED
buf[i] ^= key[i % klen]
let n = read(fd, buf, 64)
while !done { step(); }
push(stack, frame)
0x7F :: OK
type Handler = fn(Ctx)
emit(Event::Data, payload)
select! { rx => handle(rx) }
spawn(async move { run() })
>> 0x01: PROCESSING
map.insert(k, v)
drain().collect::<Vec<_>>()
let _ = tx.send(msg)
timeout(Duration::ms(100))
>> CHECKSUM PASS
fn encode(src: &[u8]) -> Vec
pipe.write_all(&frame)
crc32(data, len)
>> 0x00FF: ACK
schedule(task, interval)
lock.acquire()
>> SYNC COMPLETE
release(ptr)
0x00 0x00 0x00 0x01
watchdog.reset()
>> LINK ESTABLISHED
fn poll(&mut self) -> Poll
waker.wake_by_ref()
cx.waker().clone()
01101001 01101110
fn init() -> Result<()>
for x in 0..buf.len()
load(addr, 0xFF)
sys.run(0x4A, flags)
if val > 0 { dispatch() }
>> 0x00: READY
loop { poll(); yield; }
stream.flush()
0xDEAD :: 0xBEEF
bind(sock, &addr, len)
pub fn connect(host: &str)
match state {
State::Init => boot(),
State::Run => tick(),
_ => halt(),
}
reg[0x3] = 0b11001010
clk.tick()
assert!(val != null)
>> SIGNAL RECEIVED
buf[i] ^= key[i % klen]
let n = read(fd, buf, 64)
while !done { step(); }
push(stack, frame)
0x7F :: OK
type Handler = fn(Ctx)
emit(Event::Data, payload)
select! { rx => handle(rx) }
spawn(async move { run() })
>> 0x01: PROCESSING
map.insert(k, v)
drain().collect::<Vec<_>>()
let _ = tx.send(msg)
timeout(Duration::ms(100))
>> CHECKSUM PASS
fn encode(src: &[u8]) -> Vec
pipe.write_all(&frame)
crc32(data, len)
>> 0x00FF: ACK
schedule(task, interval)
lock.acquire()
>> SYNC COMPLETE
release(ptr)
0x00 0x00 0x00 0x01
watchdog.reset()
>> LINK ESTABLISHED
fn poll(&mut self) -> Poll
waker.wake_by_ref()
cx.waker().clone()
01101001 01101110
fn init() -> Result<()>
for x in 0..buf.len()
load(addr, 0xFF)
sys.run(0x4A, flags)
if val > 0 { dispatch() }
>> 0x00: READY
loop { poll(); yield; }
stream.flush()
0xDEAD :: 0xBEEF
bind(sock, &addr, len)
pub fn connect(host: &str)
match state {
State::Init => boot(),
State::Run => tick(),
_ => halt(),
}
reg[0x3] = 0b11001010
clk.tick()
assert!(val != null)
crc32(data, len)
>> 0x00FF: ACK
schedule(task, interval)
lock.acquire()
>> SYNC COMPLETE
release(ptr)
0x00 0x00 0x00 0x01
watchdog.reset()
>> LINK ESTABLISHED
fn poll(&mut self) -> Poll
waker.wake_by_ref()
cx.waker().clone()
01101001 01101110
fn init() -> Result<()>
for x in 0..buf.len()
load(addr, 0xFF)
sys.run(0x4A, flags)
if val > 0 { dispatch() }
>> 0x00: READY
loop { poll(); yield; }
stream.flush()
0xDEAD :: 0xBEEF
bind(sock, &addr, len)
pub fn connect(host: &str)
match state {
State::Init => boot(),
State::Run => tick(),
_ => halt(),
}
reg[0x3] = 0b11001010
clk.tick()
assert!(val != null)
>> SIGNAL RECEIVED
buf[i] ^= key[i % klen]
let n = read(fd, buf, 64)
while !done { step(); }
push(stack, frame)
0x7F :: OK
type Handler = fn(Ctx)
emit(Event::Data, payload)
select! { rx => handle(rx) }
spawn(async move { run() })
>> 0x01: PROCESSING
map.insert(k, v)
drain().collect::<Vec<_>>()
let _ = tx.send(msg)
timeout(Duration::ms(100))
>> CHECKSUM PASS
fn encode(src: &[u8]) -> Vec
pipe.write_all(&frame)
crc32(data, len)
>> 0x00FF: ACK
schedule(task, interval)
lock.acquire()
>> SYNC COMPLETE
release(ptr)
0x00 0x00 0x00 0x01
watchdog.reset()
>> LINK ESTABLISHED
fn poll(&mut self) -> Poll
waker.wake_by_ref()
cx.waker().clone()
01101001 01101110
fn init() -> Result<()>
for x in 0..buf.len()
load(addr, 0xFF)
sys.run(0x4A, flags)
if val > 0 { dispatch() }
>> 0x00: READY
loop { poll(); yield; }
stream.flush()
0xDEAD :: 0xBEEF
bind(sock, &addr, len)
pub fn connect(host: &str)
match state {
State::Init => boot(),
State::Run => tick(),
_ => halt(),
}
reg[0x3] = 0b11001010
clk.tick()
assert!(val != null)
>> SIGNAL RECEIVED
buf[i] ^= key[i % klen]
let n = read(fd, buf, 64)
while !done { step(); }
push(stack, frame)
0x7F :: OK
type Handler = fn(Ctx)
emit(Event::Data, payload)
select! { rx => handle(rx) }
spawn(async move { run() })
>> 0x01: PROCESSING
map.insert(k, v)
drain().collect::<Vec<_>>()
let _ = tx.send(msg)
timeout(Duration::ms(100))
>> CHECKSUM PASS
fn encode(src: &[u8]) -> Vec
pipe.write_all(&frame)
INDIGO-NX// DEV LOG
← JOURNAL
PUBLIC2 min read

Hearing Bench

hearingweb-audiotoolsindigo-nx

Listening to a fresh episode of The Rest Is Science — Hannah Fry and Michael Stevens's new Goalhanger show — titled This Episode Will Make You Angry. Nothing to do with hearing. The idea for a hearing tool just showed up while it was on. That's how it works sometimes. Credit where the trigger came from; hope it finds them one day.

Nine tests, pure Web Audio, no upload, no calibration to lie about:

  • HF threshold — the classic mosquito-tone age indicator
  • Audiogram sweep — per-ear thresholds at 125 Hz → 16 kHz, plotted on the usual red/blue chart
  • Balance — pan a tone until it feels centred; if it doesn't, that's data
  • Frequency & loudness JND — smallest pitch and volume differences you can actually detect
  • Temporal gap detection — how short a silence between two tones you can still hear
  • Tinnitus matcher — pin down a repeatable frequency + level match for what you already hear internally
  • Missing fundamental — the demo where your brain constructs a note nobody's playing
  • Binaural beats — a phantom rhythm that exists only in your head

None of this is a clinical audiogram. No calibrated SPL is possible in a browser — the numbers are relative to your hardware. Read them as "here's my instrument's shape today", not "here's my hearing in dB HL".

Lives at /soundscape/hearing-bench. Results save to your browser's localStorage and stay there — no server, no telemetry, no account, no export unless you copy it out yourself.

Start low on the volume. It's easy to hurt yourself with a slider.

// DISCUSSION

DISCUSSION

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