diff --git a/lasp/filter/filterbank_design.py b/lasp/filter/filterbank_design.py
index d6c3c5f..1978012 100644
--- a/lasp/filter/filterbank_design.py
+++ b/lasp/filter/filterbank_design.py
@@ -30,7 +30,7 @@ class FilterBankDesigner:
             fs: Sampling frequency [Hz]
         """
         # Default FIR filter length
-        firFilterLength = 256  # Filter order
+        self.firFilterLength = 256  # Filter order
         self.fs = fs
 
         # Constant G, according to standard
@@ -99,8 +99,8 @@ class FilterBankDesigner:
         Returns:
             filter: 1D ndarray with FIR filter coefficients
         """
-        assert np.isclose(fs, self.fs), "Invalid sampling frequency"
-        fd = fs / np.prod(self.firDecimation(x))
+        assert np.isclose(self.fs, 48000), "Invalid sampling frequency"
+        fd = self.fs / np.prod(self.firDecimation(x))
 
         # For designing the filter, the lower and upper frequencies need to be
         # slightly adjusted to fall within the limits for a class 1 filter.
diff --git a/lasp/lasp_avstream.py b/lasp/lasp_avstream.py
index 788ec86..047024e 100644
--- a/lasp/lasp_avstream.py
+++ b/lasp/lasp_avstream.py
@@ -60,6 +60,8 @@ class AvStream:
         # Determine highest input channel number
         channelconfigs = daqconfig.en_input_channels
 
+        self.channel_names = []
+
         self.sensitivity = self.daqconfig.getSensitivities()
 
         rtaudio_inputparams = None
@@ -79,6 +81,7 @@ class AvStream:
             for i, channelconfig in enumerate(channelconfigs):
                 if channelconfig.channel_enabled:
                     self.nchannels = i+1
+                    self.channel_names.append(channelconfig.channel_name)
             rtaudio_inputparams = {'deviceid': device.index,
                                    'nchannels': self.nchannels,
                                    'firstchannel': 0}
diff --git a/lasp/lasp_common.py b/lasp/lasp_common.py
index 707defc..bfffdf2 100644
--- a/lasp/lasp_common.py
+++ b/lasp/lasp_common.py
@@ -82,9 +82,9 @@ class TimeWeighting:
     fast = (0.125, 'Fast (0.125 s)')
     slow = (1.0, 'Slow (1.0 s)')
     tens = (10, '10 s')
-    infinite = (np.Inf, 'Infinite')
+    infinite = (np.Inf, 'Infinite (Leq)')
     types = (none, uufast, ufast, fast, slow, tens, infinite)
-    default = 2
+    default = 3
 
     @staticmethod
     def fillComboBox(cb):
diff --git a/lasp/lasp_octavefilter.py b/lasp/lasp_octavefilter.py
index f3ae0c7..c8e6857 100644
--- a/lasp/lasp_octavefilter.py
+++ b/lasp/lasp_octavefilter.py
@@ -115,7 +115,7 @@ class FirFilterBank:
                     #  These are the filters that do not require lasp_decimation
                     #  prior to filtering
                     nominals_txt.append(self.designer.nominal_txt(x))
-                    firs[:, i] = self.designer.createFirFilter(fs, x)
+                    firs[:, i] = self.designer.createFirFilter(x)
                 filterbank = {'fb': pyxFilterBank(firs, 1024),
                               'xs': xs,
                               'nominals': nominals_txt}
@@ -203,7 +203,7 @@ class FirOctaveFilterBank(FirFilterBank):
     """
 
     def __init__(self, fs, xmin, xmax):
-        self.designer = OctaveBankDesigner()
+        self.designer = OctaveBankDesigner(fs)
         FirFilterBank.__init__(self, fs, xmin, xmax)
 
 
@@ -231,6 +231,7 @@ class SosFilterBank:
         self.fs = fs
         self.xs = list(range(xmin, xmax + 1))
         nfilt = len(self.xs)
+        self.nfilt = nfilt
         self._fb = pyxSosFilterBank(nfilt, 5)
         for i, x in enumerate(self.xs):
             sos = self.designer.createSOSFilter(x)
@@ -279,7 +280,7 @@ class SosThirdOctaveFilterBank(SosFilterBank):
     band.
     """
 
-    def __init__(self, fs, xmin, xmax):
+    def __init__(self, fs, xmin=None, xmax=None):
         """
         Initialize a second order sections filterbank.
 
@@ -289,6 +290,10 @@ class SosThirdOctaveFilterBank(SosFilterBank):
             xmax: Maximum value for the bands
         """
         self.designer = ThirdOctaveBankDesigner(fs)
+        if xmin is None:
+            xmin = self.designer.xs[0]
+        if xmax is None:
+            xmax = self.designer.xs[-1]
         SosFilterBank.__init__(self, fs, xmin, xmax)
 
 
@@ -298,16 +303,20 @@ class SosOctaveFilterBank(SosFilterBank):
     band.
     """
 
-    def __init__(self, fs, xmin, xmax):
+    def __init__(self, fs, xmin=None, xmax=None):
         """
         Initialize a second order sections filterbank.
 
         Args:
             fs: Sampling frequency [Hz]
-            xmin: Minimum value for the bands
-            xmax: Maximum value for the bands
+            xmin: Minimum value for the bands, if not specified, use minimum
+            xmax: Maximum value for the bands, if not specified, use maximum
         """
         self.designer = OctaveBankDesigner(fs)
+        if xmin is None:
+            xmin = self.designer.xs[0]
+        if xmax is None:
+            xmax = self.designer.xs[-1]
         SosFilterBank.__init__(self, fs, xmin, xmax)