diff --git a/sys/dev/sound/pcm/channel.c b/sys/dev/sound/pcm/channel.c
--- a/sys/dev/sound/pcm/channel.c
+++ b/sys/dev/sound/pcm/channel.c
@@ -973,9 +973,13 @@
 #if BYTE_ORDER == LITTLE_ENDIAN
 	{ "s32le", "s32", "32", AFMT_S32_LE },
 	{ "s32be",  NULL, NULL, AFMT_S32_BE },
+	{ "f32le", "f32", NULL, AFMT_F32_LE },
+	{ "f32be",  NULL, NULL, AFMT_F32_BE },
 #else
 	{ "s32le",  NULL, NULL, AFMT_S32_LE },
 	{ "s32be", "s32", "32", AFMT_S32_BE },
+	{ "f32le",  NULL, NULL, AFMT_F32_LE },
+	{ "f32be", "f32", NULL, AFMT_F32_BE },
 #endif
 	{ "u32le",  NULL, NULL, AFMT_U32_LE },
 	{ "u32be",  NULL, NULL, AFMT_U32_BE },
diff --git a/sys/dev/sound/pcm/feeder_chain.c b/sys/dev/sound/pcm/feeder_chain.c
--- a/sys/dev/sound/pcm/feeder_chain.c
+++ b/sys/dev/sound/pcm/feeder_chain.c
@@ -102,6 +102,7 @@
 	AFMT_S16_LE, AFMT_S16_BE, AFMT_U16_LE, AFMT_U16_BE,
 	AFMT_S24_LE, AFMT_S24_BE, AFMT_U24_LE, AFMT_U24_BE,
 	AFMT_S32_LE, AFMT_S32_BE, AFMT_U32_LE, AFMT_U32_BE,
+	AFMT_F32_LE, AFMT_F32_BE,
 	0
 };
 
@@ -111,6 +112,7 @@
 	AFMT_S16_LE, AFMT_S16_BE, AFMT_U16_LE, AFMT_U16_BE,
 	AFMT_S24_LE, AFMT_S24_BE, AFMT_U24_LE, AFMT_U24_BE,
 	AFMT_S32_LE, AFMT_S32_BE, AFMT_U32_LE, AFMT_U32_BE,
+	AFMT_F32_LE, AFMT_F32_BE,
 	0
 };
 
diff --git a/sys/dev/sound/pcm/feeder_mixer.c b/sys/dev/sound/pcm/feeder_mixer.c
--- a/sys/dev/sound/pcm/feeder_mixer.c
+++ b/sys/dev/sound/pcm/feeder_mixer.c
@@ -73,10 +73,12 @@
 #if BYTE_ORDER == LITTLE_ENDIAN || defined(SND_FEEDER_MULTIFORMAT)
 FEEDMIXER_DECLARE(S, 16, LE)
 FEEDMIXER_DECLARE(S, 32, LE)
+FEEDMIXER_DECLARE(F, 32, LE)
 #endif
 #if BYTE_ORDER == BIG_ENDIAN || defined(SND_FEEDER_MULTIFORMAT)
 FEEDMIXER_DECLARE(S, 16, BE)
 FEEDMIXER_DECLARE(S, 32, BE)
+FEEDMIXER_DECLARE(F, 32, BE)
 #endif
 #ifdef SND_FEEDER_MULTIFORMAT
 FEEDMIXER_DECLARE(S,  8, NE)
@@ -108,10 +110,12 @@
 #if BYTE_ORDER == LITTLE_ENDIAN || defined(SND_FEEDER_MULTIFORMAT)
 	FEEDMIXER_ENTRY(S, 16, LE),
 	FEEDMIXER_ENTRY(S, 32, LE),
+	FEEDMIXER_ENTRY(F, 32, LE),
 #endif
 #if BYTE_ORDER == BIG_ENDIAN || defined(SND_FEEDER_MULTIFORMAT)
 	FEEDMIXER_ENTRY(S, 16, BE),
 	FEEDMIXER_ENTRY(S, 32, BE),
+	FEEDMIXER_ENTRY(F, 32, BE),
 #endif
 #ifdef SND_FEEDER_MULTIFORMAT
 	FEEDMIXER_ENTRY(S, 24, LE),
diff --git a/sys/dev/sound/pcm/feeder_rate.c b/sys/dev/sound/pcm/feeder_rate.c
--- a/sys/dev/sound/pcm/feeder_rate.c
+++ b/sys/dev/sound/pcm/feeder_rate.c
@@ -643,6 +643,8 @@
 Z_DECLARE(U, 16, BE)
 Z_DECLARE(U, 24, BE)
 Z_DECLARE(U, 32, BE)
+Z_DECLARE(F, 32, LE)
+Z_DECLARE(F, 32, BE)
 #endif
 
 enum {
@@ -691,6 +693,8 @@
 	Z_RESAMPLER_ENTRY(U, 16, BE),
 	Z_RESAMPLER_ENTRY(U, 24, BE),
 	Z_RESAMPLER_ENTRY(U, 32, BE),
+	Z_RESAMPLER_ENTRY(F, 32, LE),
+	Z_RESAMPLER_ENTRY(F, 32, BE),
 #endif
 };
 
diff --git a/sys/dev/sound/pcm/feeder_volume.c b/sys/dev/sound/pcm/feeder_volume.c
--- a/sys/dev/sound/pcm/feeder_volume.c
+++ b/sys/dev/sound/pcm/feeder_volume.c
@@ -92,6 +92,8 @@
 FEEDVOLUME_DECLARE(U, 16, BE)
 FEEDVOLUME_DECLARE(U, 24, BE)
 FEEDVOLUME_DECLARE(U, 32, BE)
+FEEDVOLUME_DECLARE(F, 32, LE)
+FEEDVOLUME_DECLARE(F, 32, BE)
 #endif
 
 struct feed_volume_info {
diff --git a/sys/dev/sound/pcm/pcm.h b/sys/dev/sound/pcm/pcm.h
--- a/sys/dev/sound/pcm/pcm.h
+++ b/sys/dev/sound/pcm/pcm.h
@@ -124,6 +124,7 @@
 static __always_inline __unused intpcm_t
 pcm_sample_read(const uint8_t *src, uint32_t fmt)
 {
+	float fv;
 	intpcm_t v;
 
 	fmt = AFMT_ENCODING(fmt);
@@ -186,6 +187,24 @@
 		v = INTPCM_T(src[3] | src[2] << 8 | src[1] << 16 |
 		    (int8_t)(src[0] ^ 0x80) << 24);
 		break;
+	case AFMT_F32_LE:	/* FALLTHROUGH */
+	case AFMT_F32_BE:
+		if (fmt == AFMT_F32_LE) {
+			v = INTPCM_T(src[0] | src[1] << 8 | src[2] << 16 |
+			    (int8_t)src[3] << 24);
+		} else {
+			v = INTPCM_T(src[3] | src[2] << 8 | src[1] << 16 |
+			    (int8_t)src[0] << 24);
+		}
+#ifdef _KERNEL
+		fpu_kern_enter(curthread, NULL, FPU_KERN_NOCTX);
+#endif
+		memcpy(&fv, &v, sizeof(fv));
+		v = INTPCM_T(fv * (float)PCM_S32_MAX);
+#ifdef _KERNEL
+		fpu_kern_leave(curthread, NULL);
+#endif
+		break;
 	default:
 		v = 0;
 		printf("%s(): unknown format: 0x%08x\n", __func__, fmt);
@@ -237,8 +256,21 @@
 static __always_inline __unused void
 pcm_sample_write(uint8_t *dst, intpcm_t v, uint32_t fmt)
 {
+	float fv;
+
 	fmt = AFMT_ENCODING(fmt);
 
+	if (fmt & (AFMT_F32_LE | AFMT_F32_BE)) {
+#ifdef _KERNEL
+		fpu_kern_enter(curthread, NULL, FPU_KERN_NOCTX);
+#endif
+		fv = (float)v / (float)PCM_S32_MAX;
+		memcpy(&v, &fv, sizeof(v));
+#ifdef _KERNEL
+		fpu_kern_leave(curthread, NULL);
+#endif
+	}
+
 	switch (fmt) {
 	case AFMT_AC3:
 		*(int16_t *)dst = 0;
@@ -291,13 +323,15 @@
 		dst[1] = v >> 8;
 		dst[0] = (v >> 16) ^ 0x80;
 		break;
-	case AFMT_S32_LE:
+	case AFMT_S32_LE:	/* FALLTHROUGH */
+	case AFMT_F32_LE:
 		dst[0] = v;
 		dst[1] = v >> 8;
 		dst[2] = v >> 16;
 		dst[3] = v >> 24;
 		break;
-	case AFMT_S32_BE:
+	case AFMT_S32_BE:	/* FALLTHROUGH */
+	case AFMT_F32_BE:
 		dst[3] = v;
 		dst[2] = v >> 8;
 		dst[1] = v >> 16;
diff --git a/sys/dev/sound/pcm/sound.h b/sys/dev/sound/pcm/sound.h
--- a/sys/dev/sound/pcm/sound.h
+++ b/sys/dev/sound/pcm/sound.h
@@ -444,15 +444,17 @@
 #endif /* _KERNEL */
 
 /* make figuring out what a format is easier. got AFMT_STEREO already */
-#define AFMT_32BIT (AFMT_S32_LE | AFMT_S32_BE | AFMT_U32_LE | AFMT_U32_BE)
+#define AFMT_32BIT (AFMT_S32_LE | AFMT_S32_BE | AFMT_U32_LE | AFMT_U32_BE | \
+			AFMT_F32_LE | AFMT_F32_BE)
 #define AFMT_24BIT (AFMT_S24_LE | AFMT_S24_BE | AFMT_U24_LE | AFMT_U24_BE)
 #define AFMT_16BIT (AFMT_S16_LE | AFMT_S16_BE | AFMT_U16_LE | AFMT_U16_BE)
 #define AFMT_G711  (AFMT_MU_LAW | AFMT_A_LAW)
 #define AFMT_8BIT (AFMT_G711 | AFMT_U8 | AFMT_S8)
-#define AFMT_SIGNED (AFMT_S32_LE | AFMT_S32_BE | AFMT_S24_LE | AFMT_S24_BE | \
+#define AFMT_SIGNED (AFMT_S32_LE | AFMT_S32_BE | AFMT_F32_LE | AFMT_F32_BE | \
+			AFMT_S24_LE | AFMT_S24_BE | \
 			AFMT_S16_LE | AFMT_S16_BE | AFMT_S8)
-#define AFMT_BIGENDIAN (AFMT_S32_BE | AFMT_U32_BE | AFMT_S24_BE | AFMT_U24_BE | \
-			AFMT_S16_BE | AFMT_U16_BE)
+#define AFMT_BIGENDIAN (AFMT_S32_BE | AFMT_U32_BE | AFMT_F32_BE | \
+			AFMT_S24_BE | AFMT_U24_BE | AFMT_S16_BE | AFMT_U16_BE)
 
 #define AFMT_CONVERTIBLE	(AFMT_8BIT | AFMT_16BIT | AFMT_24BIT |	\
 				 AFMT_32BIT)
@@ -502,7 +504,8 @@
 #define AFMT_U8_NE	AFMT_U8
 #define AFMT_S8_NE	AFMT_S8
 
-#define AFMT_SIGNED_NE	(AFMT_S8_NE | AFMT_S16_NE | AFMT_S24_NE | AFMT_S32_NE)
+#define AFMT_SIGNED_NE	(AFMT_S8_NE | AFMT_S16_NE | AFMT_S24_NE | \
+			AFMT_S32_NE | AFMT_F32_NE)
 
 #define AFMT_NE		(AFMT_SIGNED_NE | AFMT_U8_NE | AFMT_U16_NE |	\
 			 AFMT_U24_NE | AFMT_U32_NE)
diff --git a/sys/sys/soundcard.h b/sys/sys/soundcard.h
--- a/sys/sys/soundcard.h
+++ b/sys/sys/soundcard.h
@@ -184,6 +184,8 @@
 #define AFMT_S24_BE	0x00020000	/* Big endian signed 24-bit */
 #define AFMT_U24_LE	0x00040000	/* Little endian unsigned 24-bit */
 #define AFMT_U24_BE	0x00080000	/* Big endian unsigned 24-bit */
+#define AFMT_F32_LE	0x10000000	/* Little endian 32-bit floating point */
+#define AFMT_F32_BE	0x20000000	/* Big endian 32-bit floating point */
 
 /* Machine dependent AFMT_* definitions. */
 #if BYTE_ORDER == LITTLE_ENDIAN
@@ -199,6 +201,8 @@
 #define AFMT_U16_OE	AFMT_U16_BE
 #define AFMT_U24_OE	AFMT_U24_BE
 #define AFMT_U32_OE	AFMT_U32_BE
+#define AFMT_F32_NE	AFMT_F32_LE
+#define AFMT_F32_OE	AFMT_F32_BE
 #else
 #define AFMT_S16_OE	AFMT_S16_LE
 #define AFMT_S24_OE	AFMT_S24_LE
@@ -212,8 +216,12 @@
 #define AFMT_U16_NE	AFMT_U16_BE
 #define AFMT_U24_NE	AFMT_U24_BE
 #define AFMT_U32_NE	AFMT_U32_BE
+#define AFMT_F32_NE	AFMT_F32_BE
+#define AFMT_F32_OE	AFMT_F32_LE
 #endif
 
+#define AFMT_FLOAT	AFMT_F32_NE	/* compatibility alias */
+
 #define AFMT_STEREO	0x10000000	/* can do/want stereo	*/
 
 /*
diff --git a/tests/sys/sound/pcm_read_write.c b/tests/sys/sound/pcm_read_write.c
--- a/tests/sys/sound/pcm_read_write.c
+++ b/tests/sys/sound/pcm_read_write.c
@@ -70,6 +70,12 @@
 	{"u32be_1", {0x01, 0x02, 0x03, 0x04}, 4, AFMT_U32_BE, 0x81020304},
 	{"u32be_2", {0x81, 0x82, 0x83, 0x84}, 4, AFMT_U32_BE, 0x01828384},
 
+	/* 32 bit floating point sample formats. */
+	{"f32le_1", {0x00, 0x00, 0x00, 0x3f}, 4, AFMT_F32_LE, 0x40000000},
+	{"f32le_2", {0x00, 0x00, 0x00, 0xbf}, 4, AFMT_F32_LE, 0xc0000000},
+	{"f32be_1", {0x3f, 0x00, 0x00, 0x00}, 4, AFMT_F32_BE, 0x40000000},
+	{"f32be_2", {0xbf, 0x00, 0x00, 0x00}, 4, AFMT_F32_BE, 0xc0000000},
+
 	/* u-law and A-law sample formats. */
 	{"mulaw_1", {0x01, 0x00, 0x00, 0x00}, 1, AFMT_MU_LAW, 0xffffff87},
 	{"mulaw_2", {0x81, 0x00, 0x00, 0x00}, 1, AFMT_MU_LAW, 0x00000079},