lspci -v | grep -A7 -i "audio"

00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio Controller (rev 03)
        Subsystem: ASUSTeK Computer Inc. Asus M51S series
        Flags: bus master, fast devsel, latency 0, IRQ 50
        Memory at febf8000 (64-bit, non-prefetchable) [size=16K]
        Capabilities: [50] Power Management version 2
        Capabilities: [60] MSI: Enable+ Count=1/1 Maskable- 64bit+
        Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00
        Capabilities: [100] Virtual Channel